An Upward Shift in the Supply Curve of Good Y

Multiple Choice

An upward shift in the supply curve of good Y, a complement of some good X, will tend to cause:

A) the demand curve for X to shift to the left.
B) the demand curve for X to shift to the right.
C) the price of X to increase even though the demand curve for X is unaffected.
D) the price of X to fall even though the demand curve for X is unaffected.
E) none of the above.