We have three blocks. We call them A, B and C. Blocks C and A are below B. Block A has a medium black square. Block B contains two medium blue squares. Below a medium black square and medium blue square number two there is medium blue square number one. The medium black square is below medium blue square number two. And block C has two medium black squares. Medium black square number one is below medium black square number two.
Which object is above a medium black square? the medium black square that is in block A or the medium black square that is in block B?
the medium black square  that is in block A the medium black square  that is in block B both of them none of them