Given the project within the table below, calculate the following:

a$.$ What is the project's minimum completion time?

b$.$ What is the critical path in the project?

c$.$ What is the slack for activity B$?$

d$.$ What is the Early Start and Early Finish for Activity D

e$.$ What is the Late Start and Late Finish for activity B$?$

f$.$ What would happen to the overall project length if activity B now took an additional $3$ hours to complete, now taking a total of $11$ hours?