Choose the One Alternative That Best Completes the Statement or Answers

Multiple Choice

Choose the one alternative that best completes the statement or answers the question.
The nth term of a sequence is given. Write the first four terms of the sequence.
- $$a ^ { n } = ( - 1 ) ^ { n + 1 } 3 ^ { n }$$

A) $3 , - 6,9 , - 12$
B) $- 3,6 , - 9,12$
C) $- 3,9 , - 27,81$
D) $3 , - 9,27 , - 81$