Card 10 / 180: In a random sample of cell phone users, a leading marketing company compiled a count of total minutes per month, per user, over a three month period. With the data organized in a spreadsheet, which of the following is the best way to identify the mode number of minutes among the sample of users?
A) Sort the data in a single column from highest to lowest, and identify the value that appears most often.
B) Sort the data in a single column from highest to lowest, and find the average value by using the spreadsheet's averaging function.
C) Sort the data in two columns, subtract the difference between each row and column, and then add the total by using the spreadsheet's summary function.
D) Sort the data in three columns, and add the three month totals for each user by using the spreadsheet's summary function.

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