Answer: option C. column letter then row number.
Step-by-step explanation:
Cells is the name for each box in a spreadsheet, like Excel.
The name of the cells is formed by naming first the letter of the column and then the number of the row.
For example cell A2, means the box that is in the intersection of column A and row 2.
Other examples are:
W100: column W row 100
A1: C5: from cell A1 (column A row 1, to cell C5 (column C row 5.