All of the Following Statements,except One,are Correct

All of the following statements,except one,are correct.Which is the exception?

A) If the marginal cost curve shifts down,then the average total cost curve will also shift down.
B) If the marginal cost curve shifts down,then the average variable cost curve will also shift down.
C) The average fixed cost curve will be unaffected by a shift in the marginal cost curve.
D) If the marginal product curve shifts up,then the marginal cost curve will shift up.
E) If the marginal product curve shifts up,then the average product curve will shift up.