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