There are three blocks, A, B and C. Block B is above block A and to the right of block C. Block A contains a medium black circle. Block B contains a medium black triangle. Block C has one small blue square, a big yellow circle and one medium blue circle. The small blue square is to the right of the big yellow circle and the medium blue circle.
Which object is to the left of a medium black thing? the big yellow circle or the medium black circle?
the big yellow circle  the medium black circle  both of them none of them