There are three blocks, A, B and C. Block A is to the left of B. Block C is above A. Block A contains one medium blue square and a medium black square. The medium blue square is below the medium black square. Block B has a medium black square. A medium blue square is touching the bottom edge of this block. A medium yellow square is below the medium black square. Below the yellow object which is below the medium black square is the medium blue square. It is below the medium black square. And block C contains one medium yellow square and a medium black square. Below the medium black square is the medium yellow square.
Which object is to the left of a medium blue square? the medium yellow square which is in block C or the medium yellow square that is in block B?
the medium yellow square  which is in block C the medium yellow square  that is in block B both of them none of them