We have three blocks, A, B and C. Block A is above B and block B is to the right of C. Block A contains one medium black square. This block also has a medium blue square. The medium black square is touching the bottom edge of this block. It is below the medium blue square. Block B contains three medium black squares. Medium black square number one is below medium black square number three and medium black square number two. Medium black square number two is below medium black square number three. Block C has one medium black square.
What is below the thing that is touching the bottom edge of a block? a medium black square or a blue thing?
medium black square  blue thing both of them none of them