There are three blocks. We call them A, B and C. Block C is to the left of block B and it is below block A. Block A contains one medium blue square. Below a medium black square is the medium blue square. Block B contains one medium black square. Block C has a medium yellow square. There is also a medium blue square touching the bottom edge of this block. The medium blue square is below the medium yellow square.
What is to the right of the object which is touching the bottom edge of a block? a medium yellow square or a medium black square?
medium yellow square  medium black square  both of them none of them