There are three blocks, A, B and C. There are a small blue square and one medium blue circle in block A. Below a medium black triangle is the small blue square. This shape is to the left of and below the medium blue circle. Block B is to the left of block A. It has a small blue square. To the right of block B there is block C. It has a small yellow square and a small yellow circle. Below the small yellow circle is the small yellow square.
What is to the left of the medium blue circle? a medium black object or a small yellow square?
medium black object small yellow square  both of them none of them