There are three blocks, A, B and C. Block B is above block C and to the left of block A. Block A contains one medium yellow square. Block B has two medium black squares. Below medium black square number two is medium black square number one. And block C contains two medium blue squares. Below medium blue square number two there is medium blue square number one.
Which object is below a medium black square? medium blue square number two or medium blue square number one?
medium blue square  number two medium blue square  number one both of them none of them