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