There are three blocks, A, B and C. One medium blue square and one medium yellow square are in block A. Below the medium yellow square is the medium blue square. Block B is to the left of block A. It contains one medium black square. There is also a medium blue square in this block. The medium black square is touching the bottom edge of this block. It is below the medium blue square. Below block B there is block C with one medium blue square and one medium yellow square in it. The medium blue square is touching the bottom edge of this block. It is below the medium yellow square.
Which object is below a medium blue 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