The Notation - $\left( \begin{array} { c } 10 \\ 5 \end{array} \right)$

Multiple Choice

The notation $\left( \frac { \mathbf { n } } { \mathrm { r } } \right) \text { means } \left( \frac { \mathrm { n } ! } { \mathrm { r } ! ( \mathrm { n } - \mathrm { r } ) ! } \right) \text {. Evaluate the expression. }$
- $\left( \begin{array} { c } 10 \\ 5 \end{array} \right)$

A) 252
B) 2
C) 30,240
D) 126