If the Buyer Wants to Motivate the Seller to Manage

If the buyer wants to motivate the seller to manage total costs, the best type of contract is:

A) firm-fixed-price FFP) .
B) cost-plus-incentive-fee CPIF)
C) firm-fixed-price plus incentive fee FFPIF) .
D) cost-plus-fixed-fee CPFF) .
E) cost-no-fee CNF) .