Problem 4-9 (Static) The R&D department is planning to bid on a large projecli'or the development ofa new communication system for commercial planes. The accompanying table shows the activities, times, and sequences required: ACTIVITY IMMEDIATE PREDECESSOR TIME (WEEKS) HImmUr-wwp i'nUUt'JWlDEDDl t... TiD wwwmm-P-P-Nw c Cl I b. What is the critical path? (You may select more than one answer. Single click the box with the question mark to produce a check mark for a correct answer and double click the box with the question mark to empty the box for a wrong answer.) c. Suppose you want to shorten the completion time as much as possmle: and you have the option ofshortening any or all of B, C: D, and (3 each one week. Which would you shOIten? [You may select more than one answer. Single click the box with the question mark to produce a check mark for a correct answer and double click the box with the question mark to empty the box for a wrong answer.) d-1. What is the new critical path? (You may select more than one answer. Single click the box with the question mark to produce a check mark for a correct answer and double click the box with the question mark to empty the box for a wrong answer.) d-2.What is the earliest completion time for the new critical path? _:weeks