Write an Expression for the Nth Term of the Geometric $$a _ { 1 } = 900 , r = 1.02 , n = 40$$

Multiple Choice

Write an expression for the nth term of the geometric sequence.Then find the indicated term.(Round your answer to three decimal places. ) ? $$a _ { 1 } = 900 , r = 1.02 , n = 40$$ ?

A) $a _ { n } = 900 ( 1.02 ) ^ { n + 1 }$ ,About 1948.270
B) $a _ { n } = ( 1.02 ) ^ { n - 1 }$ ,About 1948.270
C) $a _ { n } = 900 ( 1.02 ) ^ { n - 1 }$ ,About 1948.270
D) $a _ { n } = 900 ( 1.02 ) ^ { n - 1 }$ ,About 1987.236
E) $a _ { n } = ( 1.02 ) ^ { n + 1 }$ ,About 1948.270