Suppose a business statistics student must make a frequency histogram, and that there are 30 data values with a maximum value of 60 and a minimum value of 45. Further, suppose that the student uses the following procedure: She uses a quotient of 15/5 = 3 to get the class width. Near the end of her work, she becomes concerned about whether she did the problem correctly, because the largest data value is not a member of the last class. Why?

A) She chose too many classes to have adequate coverage for the data.

B)She chose an incorrect procedure, in general.

C) She did not use an appropriate number of classes.

D) There are 5 classes of width 3 for a total width of 15. Therefore, the last class is [47 ,60), and 60 is not an element of this interval.