There are three blocks, A, B and C. Block A is to the left of block B and to the right of block C. Block A contains a medium yellow square. Block B has a medium black square and one medium blue square. Below the medium blue square is the medium black square. Block C contains two medium yellow squares. Medium yellow square number one is below a medium black square and medium yellow square number two. Medium yellow square number two is below the medium black square. A medium blue square is touching the bottom edge of this block. It is below medium yellow square number one and the medium black square.
Which object is above a medium blue 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