There are three blocks, A, B and C. Block C is below block A and above block B. Block A contains a small black circle. Block B has a big yellow triangle and a small blue triangle. A big black triangle is near to and below the small blue triangle. The small blue triangle is touching the right edge of this block. The big black triangle is touching the right edge of this block. The big yellow triangle is to the left of the small blue triangle. Block C contains a big yellow circle. To the left of the big yellow circle is a medium black circle.
Which object is above a big black triangle? the small blue triangle that is touching the right edge of a block or the medium black object?
the small blue triangle  that is touching the right edge of  a block  the medium black object both of them none of them