There are three blocks, A, B and C. Block A contains one medium black square. Above block A is block B with two medium black squares in it. There is also a medium yellow square in this block. Medium black square number one is touching the bottom edge of this block. It is below medium black square number two which is below the medium yellow square. This object is below the medium yellow square. Below block B there is block C. It has one medium black square and one medium yellow square. Below the medium black square which is below the medium yellow square is a medium blue square. It is below the medium yellow square.
Which object is below a medium black square? the medium yellow square that is in block C or the medium yellow square which is in block B?
the medium yellow square  that is in block C the medium yellow square  which is in block B both of them none of them