We have three blocks. We call them A, B and C. Block A contains one medium black square. Then, we have block B which has a medium yellow square, one medium blue square and a medium black square. Below the medium blue square and the medium black square there is the medium yellow square. The medium blue square is below the medium black square. Finally, we have block C above block A. Block B is to the right of it. It contains two medium yellow squares. Below a medium black square is medium yellow square number one. Medium yellow square number two is below the medium black square. Below the medium yellow square number two is medium yellow square number one.
Which object is to the left of a medium yellow 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