Given the following task time estimates (HOURS), Task Time Predecessor A 40 B 20 C 25 A D 19 A, B E 25 C, D F 24 E G 18 F a. How long is the project length? [Select] b. What tasks form the critical path? [Select] c. What is the LS/LF for activity D.? [Select] d. How much slack is there in activity C? [Select] How much slack in activity D? [Select] e. What if activity D. was delayed by 6 hours, what would be the project length and critical path? [Select] f. Referring to letter e., how much slack would be in activity B.? [Select]