Baby amelia's parents measure her height every month.
h(t) models amelia's height (in centimeters) when she was t months old.
what does the statement h(30) = h(25) + 5 mean?

a. the sum of amelia's heights at 5 months and 25 months old is equal to her hight at 30 months old.

b. it took amelia 5 months to grow from a height of 30 centimeters.

c. when amelia was 30 months old, she was 5 centimeters taller than when she was 25 months old.