If R Is the Number of Rows and C Is $\frac{r - 1}{c - 1}$

Multiple Choice

If r is the number of rows and c is the number of columns, the total number of degrees of freedom in a two-way contingency table is given by

A) rc.
B) (r + 1) (c + 1) .
C) (r - 1) (c - 1) .
D) $\frac{r - 1}{c - 1}$
E) $\frac{r + 1}{c + 1}$