There are two blocks, A and B. Block A is to the left of B. Block A contains three medium black squares. Medium black square number one is touching the bottom edge of this block. Below medium black square number three which is below a medium blue square is medium black square number two. Medium black square number one is below the medium blue square. It is below medium black square number three and medium black square number two. Block B contains one medium blue square.
Which object is to the left of a medium blue square? medium black square number two or medium black square number three?
medium black square  number two medium black square  number three both of them none of them