There are three blocks, A, B and C. Block C is above A and block A is below B. Block A contains a medium blue square and a medium yellow square. Below the medium yellow square is the medium blue square. Block B contains a medium yellow square. Block C has two medium black squares. Medium black square number one is below medium black square number two. This block also contains one medium yellow square. The medium yellow square is below medium black square number two and medium black square number one.
Which object is below a medium black square? the medium yellow square that is in block C or the medium yellow square that is in block A?
the medium yellow square  that is in block C the medium yellow square  that is in block A both of them none of them