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