Use the frequency histogram to complete the following parts. Employee Salaries (a) Determine the number of classes. 300 (b) Estimate the greatest and least frequencies. 200- Frequency (c) Determine the class width. 100- (d) Describe any patterns with the data. 0- 34.5 44.5 54.5 64.5 74.5 84.5 94.5 Salary (in thousands of dollars) (a) There are classes. (Type a whole number.) (b) The least frequency is about (Round to the nearest whole number as needed.) The greatest frequency is about (Round to the nearest whole number as needed.) (c) The class width is. (Type an integer or a decimal. Do not round.)(d) What pattern does the histogram show? O A. About half of the employees' salaries are between $50,000 and $69,000. O B. Less than half of the employees make between $40,000 and $89,000. O C. Most employees make less than $39,000 or more than $90,000. O D. About half of the employees' salaries are between $70,000 and $89,000