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