A Reserve Analysis involves:

A.
Estimating by multiplying the quantity of work by productivity rate

B.
Adding resource reserves to the activity resource estimates

C.
Developing project schedule with contingency reserves as a recognition of the schedule risk

D.
Incorporating time buffers into the activity duration estimates

Explanation:
Reserve Analysis ( Contingency ): Project teams may choose to incorporate an additional time frame, called time reserve, contingency or buffer, that can be added to the activity duration or elsewhere in the schedule as recognition of schedule risk.