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