For a Common Resource,the Marginal Private Cost Curve Slopes ________

Multiple Choice

For a common resource,the marginal private cost curve slopes ________ and the marginal social cost curve slopes ________.

A) upward;upward
B) upward;downward
C) downward;upward
D) downward;downward
E) upward or downward;in the same direction as the marginal private cost curve