Anewborn 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 kitten does not weigh zero ounces at birth.
b.
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.
c.
the kitten's age and weight are not in a proportional relationship because the weight of the kitten increases over time.
d.
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.