There are three blocks. We call them A, B and C. There are one medium blue square and a medium black square in block A. Below the medium black square there is the medium blue square. Below block A we have block B which contains one medium yellow square. Below block A there is block C. It has two medium blue squares. Below medium blue square number two is medium blue square number one. It also has a medium yellow square. It is below medium blue square number two. Medium blue square number one is touching the bottom edge of this block. It is below the yellow object which is below medium blue square number two.
Which object is below a medium blue square? the medium yellow square that is in block C or the medium yellow square which is in block B?
the medium yellow square  that is in block C the medium yellow square  which is in block B both of them none of them