This Graph Illustrates the Market for Groceries with and Without

This graph illustrates the market for groceries with and without a per unit tax:
On this graph the incidence of the tax on groceries

A) falls solely on the supplier.
B) falls primarily on the supplier,but the consumer bears some of the tax.
C) is evenly split between the supplier and the consumer.
D) falls primarily on the consumer,although the supplier bears some of the tax.