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)