We have three blocks. We call them A, B and C. Block B is to the right of A. Block A is to the right of C. Block A has a medium black square. Block B has one medium blue square and a medium black square. The medium blue square is below a medium yellow square and the medium black square. The medium yellow square is below the medium black square. Block C contains a medium blue square.
Which object is to the left 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