Find the Nth Term $a _ { n }$ Of a Sequence Whose First Four Terms Are Given

Multiple Choice

Find the nth term $a _ { n }$ of a sequence whose first four terms are given.
- $4,16,64,256 , \ldots$

A) $a _ { n } = \mathrm { n } + 2$
B) $a _ { n } = 2 ^ { n - 1 }$
C) $a _ { n } = 2 ^ { n }$
D) $a _ { n } = 2 n$