There are two blocks, A and B. Block A is to the right of B. Block A has a medium black square. One medium yellow square is also in this block. Below the medium black square is the medium yellow square. Block B contains two medium blue squares. It also has one medium black square. The medium black square is below medium blue square number one , a medium yellow square and medium blue square number two. Below medium blue square number two is the medium yellow square. Medium blue square number one is below medium blue square number two.
Which object is to the left of a medium black square? the medium yellow square that is in block A or the medium yellow square that is in block B?
the medium yellow square  that is in block A the medium yellow square  that is in block B both of them none of them