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