There are three blocks, A, B and C. Block C is to the left of block A and above block B. Block A contains one medium black square. Block B has two medium yellow squares. Medium yellow square number one is touching the bottom edge of this block. It is below medium yellow square number two and a medium black square. Below medium yellow square number two is the medium black square. Block C has one medium black square.
Which object is below a medium black 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