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