There are three blocks, A, B and C. Block B is below C and block C is below A. Block A contains a small yellow square. A big yellow circle is near to a big black square. The big black square is touching the bottom edge of this block. The small yellow square is near to and to the right of the big yellow circle. Block B has two big yellow squares. Above, to the left of and near to a small yellow square there is big yellow square number one. Block C contains two medium blue triangles. A small yellow square is touching the bottom edge of this block. Medium blue triangle number one is touching the bottom edge of this block. This block also has a small blue circle. Below the small blue circle is medium blue triangle number one. It is to the right of medium blue triangle number two. The small yellow square is near to and to the right of medium blue triangle number two. It is to the left of medium blue triangle number one.
What is below the black thing? a small blue circle or a big yellow circle?
small blue circle  big yellow circle  both of them none of them