There are three blocks, A, B and C. Block C is below A and block B is to the right of C. Block A has a medium blue square and one medium black square. The medium blue square is below the medium black square. Block B has one medium blue square and a medium black square. Below the medium black square there is the medium blue square. Block C contains a medium yellow square and one medium black square. The medium yellow square is below the medium black square.
Which object is below a medium black square? the medium black square that is in block A or the medium black square which is in block C?
the medium black square  that is in block A the medium black square  which is in block C both of them none of them