Use the Following Statements to Answer This Question: I

Multiple Choice

Use the following statements to answer this question: I. An increase in the firm's fixed costs will also shift the firm's short-run supply curve to the left.
II) An increase in the firm's fixed costs will not shift the firm's short-run supply curve to the right or left, but it may alter how much of the marginal cost curve is used to form the short-run supply curve.

A) I and II are true.
B) I is true and II is false.
C) II is true and I is false.
D) I and II are false.