There are three blocks, A, B and C. Blocks A and B are above C. Block A contains two medium yellow squares. Medium yellow square number one is below medium yellow square number two. Block B has two medium black squares. Below medium black square number two there is medium black square number one. Block C has one medium black square.
Which object is above a medium black square? medium yellow square number one or medium yellow square number two?
medium yellow square  number one medium yellow square  number two both of them none of them