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