Write the First Four Terms of the Sequence Whose General $$a _ { n } = 4 ^ { n }$$

Write the first four terms of the sequence whose general term is given.
- $$a _ { n } = 4 ^ { n }$$

A) $4,16,64,256$
B) $1,16,81,256$
C) $1,4,16,64$
D) $16,64,256,1024$