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