For the Multiple Regression Model $= 75 + 25 x _ { 1 } - 15 x _ { 2 } + 10 x _ { 3 }$

Multiple Choice

For the multiple regression model $= 75 + 25 x _ { 1 } - 15 x _ { 2 } + 10 x _ { 3 }$ , if $x _ { 2 }$ were to increase by 5, holding $x _ { 1 }$ and $X _ { 3 }$ constant, the value of y would:

A) increase by 5.
B) increase by 75.
C) decrease on average by 5.
D) decrease on average by 75.