Refer to the Graph Shown

Refer to the graph shown. With an effective price ceiling at Pc, the effect is an implicit tax on:

A) suppliers of area C and a subsidy to consumers of that area.
B) suppliers of area D and a subsidy to consumers of that area.
C) consumers of area C and a subsidy to suppliers of that area.
D) consumers of area D and a subsidy to suppliers of that area.