There are three blocks. Lets call them A, B and C. Block B is above C and block C is below A. Block A contains one medium yellow square and one medium black square. Below the medium black square there is a medium blue square. The medium yellow square is touching the bottom edge of this block. This shape is below the medium black square and the medium blue square. Block B has a medium black square. And block C has two medium black squares. Medium black square number one is below medium black square number two. A medium blue square is below medium black square number one and medium black square number two.
What is below the yellow thing? a medium black square number one or a medium black square that is in block A?
medium black square  number one medium black square  that is in block A both of them none of them