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