We have three blocks. We call them A, B and C. Block A is below and C is to the left of B. Block A has one medium yellow square. Block B contains one medium blue square, one medium black square and one medium yellow square. The medium blue square is below the medium black square. The medium black square is below the medium yellow square. The medium blue square is below the medium yellow square. Block C contains a medium black square.
Which object is below 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