To “distribute” means to divide something or give a share or part of something. According to the distributive property, multiplying the sum of two or more addends by a number will give the same result as multiplying each addend individually by the number and then adding the products together.
so the correct answer is A.
A 4(3+6)=12+24
B (4+3)+6=6+(4+3)
C (12+4)+0=12+4
D (12+4)+6=12+(4+6)