Find the Missing Character

Answer: Option A

In the first figure :
5 *1 = 5
4 *2 = 8
2 *2 = 4

Second Figure :
3 *2 = 6
3 *3 = 9
2 *2 = 4

Third Figure : 6 *1 = 6
7 *1 = 7
4 *2 = 8
So Missing Character is 678.