There are three blocks, A, B and C. Block A has a medium yellow square and one medium black square. Below the medium black square there is the medium yellow square. Block B is to the right of block A. It has one medium black square. Below block B there is block C which has two medium yellow squares. Medium yellow square number one is touching the bottom edge of this block. Below medium yellow square number two is a medium black square. Medium yellow square number one is below the medium black square and medium yellow square number two.
Which object is below a medium black square? the medium black square that is in block C or the medium black square that is in block A?
the medium black square  that is in block C the medium black square  that is in block A both of them none of them