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