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