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