A newborn kitten weighs 3 ounces at birth. After four weeks, it weighs 13 ounces. Which of the following is true?
A.
The kitten's age and weight are not in a proportional relationship because the weight of the kitten increases over time.
B.
The kitten's age and weight are not in a proportional relationship because the difference in the weight of the kitten after four weeks is 10 ounces.
C.
The kitten's age and weight are not in a proportional relationship because the kitten does not weigh zero ounces at birth.
D.
The kitten's age and weight are not in a proportional relationship because the weight of the kitten increases by 2.5 ounces every week.