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