In the short-run commodity X and commodity, Y are supplied jointly, which of the following is correct?

A. An increase in demand for X will increase supply of Y
B. An increase in demand for X will leave the supply of Y unchanged
C. An increase in demand for Y will raise the price of X
D. An increase in demand for X will cause less of Y to be produced

Correct Answer: Option A

A. An increase in demand for X will increase supply of Y