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