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