Given Below Are Lower and Upper Limits of an Area $\sigma$

Multiple Choice

Given below are lower and upper limits of an area of the normal curve. Choose the limits that contain the smallest proportion of the normal curve.

A) -2 $\sigma$ to -1 $\sigma$
B) -l $\sigma$ to 0
C) 2 $\sigma$ to 3 $\sigma$
D) above 3 $\sigma$ .