Find N(A)for the Set $A = \{ x \mid x$ Is a Number on a Clock Face

Find n(A) for the set.
- $A = \{ x \mid x$ is a number on a clock face $\}$

A) $n ( A ) = 12$
B) $n ( A ) = 3$
C) $n ( A ) = 24$
D) $n ( A ) = 6$