Evaluate the Binomial Coefficient $\left( \begin{array} { l } 5 \\ 1 \end{array} \right)$

Evaluate the binomial coefficient.
- $\left( \begin{array} { l } 5 \\ 1 \end{array} \right)$

A) $\frac { 5 } { 4 }$
B) 5
C) 1
D) 5 !