In a Multiple Regression Model $y ^ { \prime } = - 11 + 2 x _ { 1 } + 9 x _ { 2 } + 5 x _ { 3 } + 4 x _ { 4 }$

Multiple Choice

In a multiple regression model $y ^ { \prime } = - 11 + 2 x _ { 1 } + 9 x _ { 2 } + 5 x _ { 3 } + 4 x _ { 4 }$ , if the value of $x _ { 2 }$ increases by 6 and the value of $x _ { 3 }$ decreases by 3 , then the predicted value for $y$ will

A) increase by 39.
B) decrease by 69.
C) decrease by 39.
D) increase by 69.