To copy a formula from a single cell or range of cells down a column or across a row, first $\_\_\_\_\_\_\_\_,$ click and hold the mouse on the small square in the lower right$-$hand corner of the cell, and drag the formula to the "target" cells which you wish to copy.

Group of answer choices

press Ctrl$-$C

select the cell or range

press Ctrl$-$Enter

select the whole spreadsheet