Consider the following project information: Activity A depends on nothing and has an expected time of 8 days, B depends on A with an expected time of 3 days, C depends on nothing with an expected time of 9 days, D depends on A with an expected time of 6 days, finally, activity E depends on B, C, and D and its expected time is 4 days. The LS for activity D is

Select one:

a. 11

b. None of the above

c. 14

d. 18

e. 8