Write an Expression for the Nth Term of the Sequence $a_ { n } = 1 - 3 ^ { n }$

Multiple Choice

Write an expression for the nth term of the sequence 2, 8, 26, 80, ....

A) $a_ { n } = 1 - 3 ^ { n }$
B) $a _ { n } = 4 ^ { n } + 1$
C) $a _ { n } = 3 ^ { n } - 1$
D) $a _ { n } = 4 ^ { n } - 5$
E) $\alpha _ { n } = 1 + 3 ^ { n }$