Provide an Appropriate Response $a _ { n } = 5 ( 4 ) ^ { n }$

Multiple Choice

Provide an appropriate response.
-Determine the general term of the sequence 5, 20, 80, 320, . . . .

A) $a _ { n } = 5 ( 4 ) ^ { n }$
B) $a _ { n } = 5 ( 4 ) ^ { n - 1 }$
C) $\mathrm { a } _ { \mathrm { n } } = 4 ( 5 ) ^ { \mathrm { n } }$
D) $a _ { n } = 4 ( 5 ) ^ { n - 1 }$