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