Question $2$

$6\mathrm{.}667$ Poin

A student is given the task of counting the number of nonblank cells in the range of cells B$1$ to B$20.$ Which of the following formulas should he use to do so$?$

$=$ COUNT $(B1$:$B20)$

$=$ COUNTIF $(B1$:$B20)$

$=$ COUNTA $(B1$:$B20)$

$=$ DCOUNTA $(B1$:$B20)$