Given the Expected Price Level, What Size of Money Supply

Multiple Choice

Given the expected price level, what size of money supply will best facilitate policies for the achievement of potential GDP?  

A)  a large money supply, so that prices at potential GDP are below expectations and people can afford to buy enough goods to support the natural level of employment 
B)  a large enough money supply that prices at potential GDP are above expectations and firms can afford to hire workers 
C)  a small money supply, so that prices at potential GDP are above expectations and firms can afford to hire the workers 
D)  a money supply that is exactly the size needed to make prices equal to the prices people expect to prevail