There are three blocks, A, B and C. Block B is above A and block A is to the left of C. Block A has three medium yellow squares. Medium yellow square number one is touching the bottom edge of this block. Medium yellow square number two is below medium yellow square number three.. Below medium yellow square number two and medium yellow square number three is medium yellow square number one. Block B has a medium black square. Below the medium black square there is a medium blue square. Block C contains a medium black square.
Which object is below a medium black square? medium yellow square number two or medium yellow square number three?
medium yellow square  number two medium yellow square  number three both of them none of them