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