There are three blocks, A, B and C. Block A is to the left of B and block B is below C. Block A has a medium yellow square. This block also contains one medium black square. The medium black square is below the medium yellow square. Block B has a medium blue square. Block C contains a medium blue square and one medium black square. Below the medium black square is the medium blue square.
Which object is above a medium blue square? the medium black square which is touching the bottom edge of a block or the medium black square which is in block C?
the medium black square  which is touching the bottom edge of a block  the medium black square  which is in block C both of them none of them