There are two blocks, A and B. Block A is below B. Block A has one small blue circle and a medium blue square. Above and to the left of the medium blue square there is the small blue circle. Block B contains a small blue square, a small yellow square and a small black circle. One small black square and one medium blue triangle are also touching the bottom edge of this block. To the right of and near to the medium blue triangle there is the small black square. The medium blue triangle is far from and to the right of the small black circle. Above the medium blue triangle there is the small yellow square.
What is to the left of the small black square? a small blue square or a medium blue square?
small blue square  medium blue square  both of them none of them