Sarreno Cheese Co

Sarreno Cheese Co.supplies mozzarella cheese to pizza restaurants at $1.70 per pound.In order to snare the business of one large pizza chain,Sarreno offers to sell them cheese at $1.45 per pound.This will violate the Robinson-Patman Act unless:

A) the pizza chain can already get the cheese for $1.45 elsewhere.
B) Sarreno can show its price is justified because of a cost savings based on quantity.
C) Sarreno lowers the price to all its customers.
D) Two of the above, (b) and (c) .
E) Any of the above.