The price-earnings (PE) ratios of a sample of stocks have a mean value of 11 and a standard deviation of 2.2. If the PE ratios have a bell shaped distribution, use the 68-95-99.7 Rule to estimate the percentage of PE ratios that fall between:

A. 8.8 and 13.2.

Percentage = %

B. 4.4 and 17.6.

Percentage = %

C. 6.6 and 15.4.

Percentage = %