There are three blocks, A, B and C. Block A is to the right of block B and to the left of block C. Block A has a medium yellow square. Block B has a medium yellow square. There is also a medium black square in this block. The medium black square is below the medium yellow square. Block C has one medium black square and one medium yellow square. Below the medium yellow square is the medium black square.
Which object is to the left of a medium black square? the medium yellow square that is in block C or the medium yellow square that is in block A?
the medium yellow square  that is in block C the medium yellow square  that is in block A both of them none of them