In the Expression $\operatorname { Pr } ( \text { deny } = 1 \mid P / I \text { Ratio, black } ) = \Phi ( - 2.26 + 2.74 P / \text { ratio } + 0.71 \text { black } )$

Multiple Choice

In the expression $\operatorname { Pr } ( \text { deny } = 1 \mid P / I \text { Ratio, black } ) = \Phi ( - 2.26 + 2.74 P / \text { ratio } + 0.71 \text { black } )$
the effect of increasing the $R ^ { 2 }$ ratio from 0.3 to 0.4 for a white person

A) is 0.274 percentage points.
B) is 6.1 percentage points.
C) should not be interpreted without knowledge of the regression
D) is 2.74 percentage points.