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