Which One of the Following Will Shift the Supply Curve

Multiple Choice

Which one of the following will shift the supply curve of good X leftward?

A) a situation where the quantity of X demanded exceeds the quantity of X supplied
B) a decrease in the cost of capital used to produce X
C) a decrease in the wages of workers employed to produce X
D) an increase in the cost of machinery used to produce X
E) a technological change that increases production of X