Select the correct answer.
Consider the geometric sequence.

8, 4, 2, 1, . . .

Given that the sequence is represented by function f, what are the values of f(1) and the common ratio?


f(1) = 8
Common ratio: 0.5

f(1) = 4
Common ratio: 2

f(1) = 4
Common ratio: 0.5

f(1) = 8
Common ratio: 2