We have three blocks. We call them A, B and C. Block B is to the left of C and block C is to the left of A. Block A contains one medium black square, one medium yellow square and one medium blue square. The medium black square is touching the bottom edge of this block. The medium yellow square is below the medium blue square. Below the medium blue square and the medium yellow square there is the medium black square. Block B contains one medium black square. And block C contains two medium blue squares. Medium blue square number one is touching the bottom edge of this block. Medium blue square number two is below a medium black square.. Below the medium black square is medium blue square number one. It is below medium blue square number two.
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 that is in block C?
the medium black square  that is in block B the medium black square  that is in block C both of them none of them