There are two blocks, A and B. Block A is to the left of B. Block A has one big yellow square. A medium black triangle is near to, below and to the right of a big blue square. Block B contains two medium black squares. Medium black square number one is above and to the right of medium black square number two.
Which object is to the left of a medium black square? the big yellow square or the blue shape?
the big yellow square  the blue shape both of them none of them