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