There are three blocks, A, B and C. Block A has a medium yellow square and one medium black square. One medium blue square is also touching the bottom edge of this block. Below the medium yellow square and the medium black square is the medium blue square. Below the medium black square is the medium yellow square. Block B is to the right of block A. It contains three medium black squares. Medium black square number one is below medium black square number two which is below medium black square number three. This shape is below medium black square number three. Finally, we have block C above block B. It has two medium blue squares. Below medium blue square number two there is medium blue square number one.
Which object is to the left of a medium black square? the medium black square which is in block A or medium black square number one?
the medium black square  which is in block A medium black square  number one both of them none of them