The Consumer Demand for a Certain Commodity Is $D ( p ) = 5,000 e ^ { - 0.03 p }$

Multiple Choice

The consumer demand for a certain commodity is $D ( p ) = 5,000 e ^ { - 0.03 p }$ units per month when the market price is p dollars per unit. Determine the market price that will result in the greatest consumer expenditure.

A) $30.31
B) $31.31
C) $33.33
D) $34.33