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