The table below shows the number of cakes Stella baked with respect to time. Number of Cakes Time
(hours)
3 2
6 4
9 6
12 8
15 10

Which of the following statements gives the unit rate?
A.
Stella baked 3 cakes in each hour.
B.
Stella took hours for each cake.
C.
Stella baked 2 cakes in each hour.
D.
Stella took of an hour for each cake.