it's gonna be A, C is an equation that shows the replication of bacterias in an arithmetic progression, A shows the replication in a exponential progression.
if you would like to input it, in the first hour, x = 1, so 2¹ = 2 × 100, 200, so we can see it doubled, So A is the answer
If you write .6 and .7 as fractions you get 6/10 and 7/10. If you double those you get 12/20 and 14/20, so one potential fraction between the two could be 13/20.
