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