The Sales-Promotion Techniques Used Within the Trade Market Are

The sales-promotion techniques used within the trade market are: 

A)  couponing, cash allowances, incentives, and slotting fees. 
B)  incentives, allowances, training programs, and cooperative advertising. 
C)  case allowances, sweepstakes, couponing, and training programs. 
D)  slotting fees, Point-of-Purchase displays, consumer rebates, and merchandise allowances.