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