If a and B Are Complements and the Cost of a Factor

Multiple Choice

If A and B are complements and the cost of a factor of production used in the production of A decreases, then the price of

A) both A and B will rise.
B) both A and B will fall.
C) A will rise and the price of B will fall.
D) A will fall and the price of B will remain unchanged.
E) A will fall and the price of B will rise.