We have three blocks. We call them A, B and C. Blocks C and B are above A. Block A has one medium yellow square. There is also a medium black square touching the bottom edge of this block. Below the medium yellow square is the medium black square. Block B has a medium blue square and one medium black square. The medium blue square is below the medium black square. Block C contains one medium yellow square, a medium black square and a medium blue square. Below the medium blue square is the medium black square. The medium yellow square is touching the bottom edge of this block. It is below the medium black square. This shape is below the medium blue square.
Which object is below a medium black square? the medium blue square that is in block C or the medium blue square that is in block B?
the medium blue square  that is in block C the medium blue square  that is in block B both of them none of them