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