OO$-$me Software has been contracted to develop a member services web application for an online gaming cooperative $($GAME$-$Co$).$

GAME$-$Co provides access to downloadable as well as web$-$hosted games for three tiers of users. The user tiers are Yearly Premium

$($YP$),$ Yearly Basic $($YB$),$ and Pay$-$As$-$You$-$Go $($PYG$).$ Likewise, games are categorized as Premium and Basic. YP users get complete

access to all games. YB users get access to all basic games but must pay for premium games as given below. PYG users pay per game

based on the table below. Users of the system are allowed to browse game titles by genre, title, popularity, and most recent. They

may also search for games by title. After finding the game of interest, the game is either downloaded or played in the browser based

on game type. YP and YB users can manage their accounts seeing balances, titles purchased, and, in the case of YB users, upgrading

status. All users are required to use an external payment provider $($Apple Pay, PayPal, Google Pay$)$ to pay their balance, purchase

upgraded games, or upgrade their status.

Document any simplifying assumptions that are made.

Question $1.(10$ Points$)$

Develop a Use Case Diagram for the GAME$-$Co$.$ Your diagram should demonstrate a minimum of three Use Cases, three actors, the

appropriate use of Generalization, and an appropriate example of a Use Case including functionality from another Use Case.

Document any simplifying assumptions. The strict use of UML notation is expected.

Question $2.(10$ points$)$

From Question $1,$ consider the process of a YB user upgrading their status with PayPal. Develop a detailed Use Case Scenario using

the Scenario template for the course. Include a brief description, actors and the step$-$by$-$step sequence of actions and identify any

exceptions for this interaction.

Question $3.(15$ points$)$

Given the description in Question $1,$ draw a Stereotype class diagram using UML notation. Your diagram should contain an example

of Generalization and include at least $4$ classes including one from each type of stereotype class discussed in the lecture.

Question $4$

For the scenario of a YB user upgrading their status with PayPal, draw a UML Activity diagram. Your diagram should include at least

one decision point.

only answer question #$4$ please!!!