The Numerator of the Appropriate Test Statistic for Testing for the Joint

Multiple Choice

The numerator of the appropriate test statistic for testing for the joint significance of a subset of independent variables is

A) $\left( U S S _ { \text {restricted } } - U S S _ { \text {unrestricted } } \right) / q$
B) $\left( U S S _ { \text {unrestricted } } - U S S _ { \text {restricted } } \right) / q .$
C) $U _ { S S _ { \text {unrestricted } } } / ( n - k - 1 ) \text {. }$
D) $U _ { S S _ { \text {restricted } } / ( n - k - 1 ) . }$