Show me the steps to solve and provide the answer to the attached question:

You work for a company that makes cell phones and have been made project manager for the design of a new cell phone. Your

supervisors hove alresdy scoped the project, so you have a list showing the work breakdawn structure, and that includes major project

activities. You must plan the project schedule and calculate project duration. Your boss wants the schedule on his desk tomorrow

morning:

You have been given the information in Exhibit: $4\mathrm{.}13.$ It includes: all the activiles required in the project and the duraton of each

activity. Also, dependencies between the activities: have been identied. Remember that the preceding activity must be fully

completed before work on the following activity can be started.

Your project is divided into five msjor subprojecta. Subproject $"$P$"$ involves developing specifications for the new cell phone. Here,

decisions related to such things as battery life, size of the phone, and festures need to be made. These details sre bssed on how a

customer uses the cell phone. These user specifications are redefined in terms thet heve meaning to the subcontractors that will

actually make the new cell phone in subproject $"S"$ supplier spectications. These involve engineering details for how the product will

perform.

The individual components that make up the product are the focus of the subproject $"$D$".$ Subproject "I" brings all the components together, and a working prototype is built and tested.

Finaly, in subproject $"$V$,"$ suppliers are selected and contracts are negotiated.

Exhlbt $4\mathrm{.}13$: Work Breakdown Structure and Actvities for the Cell Phone Design Project

A$.$ Calculate the start and finish times for each activity. $($Leave no cells blonk $-$ be certain to enter $"$O$"$ wherever required.$)$

B$.$ Determine the minimum number of weeks for completing the project.

C$.$ Find the activites that are on the critical path for completing the project in the shortest time:

$P_1-P_2-P3-P4-S1-D2-D4-I1-I4-V2$

$P_1-P_2-P3-P4-S_1-D1-D4-I1-I4-V2$

$P_1-P_2-P3-P4-S1-D2-I2-I3-I4-V2$

$P_1-P_2-P3-P4-S1-D3-D4-I1-I4-V2$