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