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