Byron wants to use the distributive property to rewrite the addition problem shown so that the numbers left in the parentheses have no common factor except 1.

(48 + 36)

Which is an equivalent expression that has numbers in the parentheses whose only common factor is 1?

A.
4(12 + 9)

B.
2(24 + 18)

C.
12(4 + 3)

D.
36(12 + 1)

To rewrite the expression (48 + 36) using the distributive property, we can factor out the greatest common factor of the numbers inside the parentheses, which is 12.

So the equivalent expression with numbers in the parentheses whose only common factor is 1 is:
12(4 + 3)

Therefore, the correct answer is Option C.