will give brainlist



Sonny substituted 5 for x in the proportion Start Fraction 16 over x End Fraction = Start Fraction 48 over 15 End Fraction and cross multiplied to get 240 = 240. Why is this?
A. because the cross sums of the proportion are equal
B. because the cross differences of the proportion are equal
C. because the cross products of the proportion are equal
D. because the cross quotients of the proportion are equal