Anewborn kitten weighs three ounces at birth. after four weeks, it weighs 13 ounces. which of the following is true?
a. the situation can be modeled by a proportional relationship because the weight of the kitten increases by 2.5 ounces every week.
b. the situation cannot be modeled by a proportional relationship because the kitten does not weigh zero ounces at birth.
c. the situation cannot be modeled by a proportional relationship because the difference in the weight of the kitten after four weeks is 10 ounces.
d. the situation can be modeled by a proportional relationship because the weight of the kitten increases over time.