Final answer:
The intersection of sets A and B is {6, 12}.
Step-by-step explanation:
To find the intersection of sets A and B, we need to find the elements that are common to both sets. From the given sets, A = {3, 6, 9, 12} and B = {2, 4, 6, 8, 10, 12}. The intersection of A and B is {6, 12}. This means that 6 and 12 are the elements that are present in both sets A and B. Therefore, the correct option is {6, 12}.