Chapter 17, problem 1, part b. What are the earliest start (ES) time, latest start (LS) time, earliest finish (EF) time, latest finish (LF) time, and slack time of activity 6?
A. 23, 23, 33, 33,0
B. 23, 37, 26, 40, 14
C. 33, 40, 37, 44, 7
D. 33, 33, 44, 44, 0
