Consider the project plan diagram attached. There are six activities and two resources available, one of type A and one of type B$,$ and$$they are available through the entire course of the project. The time and resource required to complete each activity is shown between nodes. For example, the activity$$that connects node one with node two takes nine time periods to execute, and it takes one unit of resource A the entire time it's active.

With the assumption that you only have one unit of resource A and$$one unit of resource B available$$continuously throughout the entire project, the resource loaded schedule shown below was developed. Note this constraint also determines the critical sequence of activities, which is indicated with red arrows. Resource A has a planned cost of $$5000$ per period, and Resource B has a planned cost of $$3000$ per period.

Now imagine that you have now reached the end of time period $16$ in this project. Activity $4-5$ is completed as scheduled, and Activity $3-6$ is also finished, two periods ahead of schedule. Resource A was expected to cost $$5,000$ per period for $7$ periods. However, the actual cost was $$6,000$ per period for $5$ periods. This means you are now ahead. In answering the questions below, remember that Resource A has a planned cost of $$5,000$ per period of use, and Resource B has a planned cost of $$3,000$ per period of use. Respond to the prompts at right.$$

$1.$ What is the cost variance?

$2.$ What is the new forecasted total cost at completion if you use Method $1?$

$3.$ What is the new forecasted total cost at completion if you use Method $2?$