We have three blocks, A, B and C. Block B is above and C is below A. Block A has one medium blue square and one medium black square. Below the medium black square there is the medium blue square. Block B contains one medium black square. Block C contains one medium black square and a medium blue square. Below the medium blue square is the medium black square.
Which object is below a medium blue square? the medium black square that is in block C or the medium black square which is in block A?
the medium black square  that is in block C the medium black square  which is in block A both of them none of them