Specificity,a Measure of Classification Accuracy,reflects: (Regard Class 1 as Yes

Multiple Choice

Specificity,a measure of classification accuracy,reflects: (regard class 1 as yes and class 2 as no)

A)  the portion of observations that are actually in class 1 that are classified as being in class 1. 
B)  the portion of observations that are actually in class 2 that are classified as being in class 2. 
C)  the portion of observations that are actually in class 2 that are classified as being in class 1. 
D)  the portion of observations that are classified as class 1 that are actually in class 1.