Write a Formula for the General Term (The Nth Term) $6,12,24,48,96 , \ldots$

Multiple Choice

Write a formula for the general term (the nth term) of the geometric sequence.
- $6,12,24,48,96 , \ldots$

A) $a _ { n } = 6 ( 2 ) ^ { n - 1 }$
B) $a _ { n } = a _ { 1 } + 2 ^ { n }$
C) $a _ { n } = 6 ( 2 n )$
D) $a _ { n } = 6 ( 2 ) ^ { \mathrm { n } }$