What are commons types of cost-reimbursable contracts?

A.
CPF

B.
CPFF

C.
CPIF

D.
All of the above

Explanation:
The Advantages on Cost Reimbursable Contract are:
* Simpler contract statement of work
* usually requires less work to work the scope that fixed price
* Generally lower cost than fixed price because the seller does not have add as much for risk.