There are three blocks. We call them A, B and C. Block A has one medium yellow square. Below block A there is block B which has one medium blue square and one medium yellow square. The medium blue square is below the medium yellow square. To the left of block A there is block C which has one medium yellow square and a medium black square. The medium yellow square is below the medium black square.
Which object is to the left of a medium yellow square? the black object or the blue object?
the black object the blue object both of them none of them