If the price elasticity of demand for cigarettes is 0.55, and the price of cigarettes increases by 10 percent, then the quantity of cigarettes demanded will fall by:

If the price elasticity of demand for cigarettes is 0.55, and the price of cigarettes increases by 10 percent, then the quantity of cigarettes demanded will fall by:
A.5.5 percent.
B.55 percent.
C.550 percent.
D.0.55 percent.
正确答案：5.5 percent.