Question

In a geometric sequence {a_n}, if a_1 = 4 and r = 0.2, the first 4 terms in the sequence are
A){4, .8, .16, .032,...}.
B){4, 20, 100, 500,...}.
C){4, 4.2, 4.4, 4.6,...}.
D){4, 3.8, 3.6, 3.4,...}.