Suppose a Certain Species of Fawns Between 1 and 5 $\mu$

Suppose a certain species of fawns between 1 and 5 months old have a body weight that is approximately normally distributed with mean $\mu$ = 21.1 kilograms and standard deviation $\sigma$ = 3.7 kilograms. Let x be the weight of a fawn in kilograms. Convert the following z interval to a x interval. $$- 3.1 < z$$

A) x < -9.63
B) x < 9.63
C) x > 9.63
D) x > 32.57
E) x > -32.57