A sub task can be divided into two work packages, but each would be performed by the same person and cost and duration estimates would not be

A sub task can be divided into two work packages, but each would be performed by the same person and cost and duration estimates would not be improved. Which of the following is true of this scenario?

a. divide subtask because the work packages improve the task assignment

b. do not divide the subtask if it increases reporting & control requirements

c. divide the subtask if the work packages are on the critical path

d. do not divide the subtask if it increases risk identification rates