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