Question

Mary and Linda each made a scarf for their doll. The picture below shows the measurements of each scarf.

Mary's scarf: base - 9cm ; height - 4 cm
Linda's scarf: base - 12 cm ; height - 7cm



Which of the following statements is true?


A.
The scarfs are not proportional because 4 × 9 is not equal to 12 × 7.

B.
The scarfs are not proportional because 9 × 7 is not equal to 12 × 4.

C.
The scarfs are proportional because 4 + 9 = 13 and 12 + 7 = 19.

D.
The scarfs are proportional because 9 + 7 = 12 + 4.