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