If the check box next to "My data has headers" is clicked in the Sort dialog box, which of the following is true?
a. The highlighted dataset will be sorted in ascending order.
b. The highlighted dataset can only be sorted using the values in one column.
c. Entries in the first row of the highlighted dataset will appear in the "Sort by" dropdown box.
d. The highlighted dataset will be sorted in descending order.
e. The last row of the highlighted dataset will be excluded when the data is sorted.