An Economist Estimates That 0

An economist estimates that 0.67 is the price elasticity of demand for disposable diapers.This suggests that disposable diaper producers could:

A) advertise more to raise the price elasticity of demand.
B) encourage more parents to use cloth diapers.
C) lower the price of disposable diapers to raise more revenue.
D) raise the price of disposable diapers to raise more revenue.
E) maximise revenues by staying at the current price.