We have three blocks. We call them A, B and C. Block A is to the right of B and block B is above C. Block A has a medium black square. Block B contains a medium black square and a medium blue square. Below the medium blue square is the medium black square. Block C contains one medium blue square. Below the medium blue square there is a medium yellow square.
Which object is below a medium black square? the medium blue square that is in block B or the medium blue square which is in block C?
the medium blue square  that is in block B the medium blue square  which is in block C both of them none of them