We have three blocks. We call them A, B and C. Block A is to the left of block C and below block B. Block A has a medium yellow square, a medium blue square and a medium black square. The medium yellow square is touching the bottom edge of this block. It is below the medium black square and the medium blue square. The medium blue square is below the medium black square. Block B has two medium blue squares. Medium blue square number one is touching the bottom edge of this block. It is below medium blue square number two. Block C contains one medium black square.
Which object is to the left of a medium black square? the medium blue square that is in block A or the medium blue square which is touching the bottom edge of a block?
the medium blue square  that is in block A the medium blue square  which is touching the bottom edge of a block  both of them none of them