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