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