There are three blocks, A, B and C. Block B is above block C and to the right of block A. Block A has one medium black square and a medium blue square. Below the medium blue square there is the medium black square. Block B contains a medium black square. The medium black square is touching the bottom edge of this block. This block also has a medium blue square. Below the medium blue square there is the medium black square. And block C contains one medium black square.
Which object is below a medium black square? the medium blue square that is in block B or the medium blue square that is in block A?
the medium blue square  that is in block B the medium blue square  that is in block A both of them none of them