Respuesta :

ayazdanp2399

Answer:

I am sorry but if this is wrong but i think it is either 21,because it is divisible by 3 and 12 / 3 = 4 which is a denominator

Step-by-step explanation:

21 because it is divisible by 3 and 12 / 3 = 4 which is a denominator.
I believe the answer is A. 21