What is the recursive formula of the geometric sequence?
1∕2, 3∕4, 9∕8, 27∕16, ...
Question 10 options:

A)

a1 = 1∕2; an = an – 1 ⋅ (2) for n ≥ 2

B)

an = (2) ⋅ (1∕2)n – 1 for n ≥ 1

C)

an = (1∕2) ⋅ (1∕2)n – 1 for n ≥ 1

D)

a1 = 1∕2; an = an – 1 ⋅ (3∕2) for n ≥ 2