In a Regression Model Involving 40 Observations, the Following Estimated $\hat{y}$

Multiple Choice

In a regression model involving 40 observations, the following estimated regression model was obtained $\hat{y}$ = 10 + 3x1 + 5x2 + 6x3. For this model, SSR = 300 and SSE = 75. Then, the value of MSR is:

A) 100.
B) 225.
C) 25.
D) 75.