If We Want to Change a Standard Error from 12 $\frac{1}{3}$

Multiple Choice

If we want to change a standard error from 12 to 4 by changing the sample size, we need to multiply the original sample size by

A) 3 .
B) 9 .
C) $\frac{1}{3}$ .
D) $\frac{1}{9}$ .