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