Use the applet available below to complete parts (a) through (c). (a) how many classes are in the histogram for the five-year rate of return data when the "starting point" is 8 and the "bin width" is 2? (b) how many classes are in the histogram for the five-year rate of return data when the "starting point" is 8 and the "bin width" is 4? (c) how many classes are in the histogram for the five-year rate of return data when the "starting point" is 8 and the "bin width" is 1?