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