Ageometric sequence is defined by the recursive formula t1 = 64, tn =
tn - 1 / 2, where n ∈n and n > 1. the sequence is

a) -64, -16, -8, -4, -2, -1,
b) 64, 16, 8, 4, 2, 1,
c) 64, 32, 16, 8, 4, 2,
d) 64, 128, 256, 512, 1024, 2048,