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