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