All tasks are assigned to multiple team members. A business analyst sends you an e-mail message that contains the dates of her vacation. You need to modify the schedule to reflect delays that are caused only by the business analysts vacation dates. What should you do?

A.
Modify the start and end dates of all the tasks of the business analyst.

B.
Create a new enterprise calendar, and then enter the vacation days.

C.
Use the Mark on Track command.

D.
Change the working time for the resource calendar of the business analyst.