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