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