There are three blocks. Lets call them A, B and C. Block C is above blocks A and B. Block A has one medium yellow square. Block B contains a medium blue square. Below the medium blue square there is a medium black square. And block C has two medium yellow squares. Medium yellow square number one is below a medium black square. Medium yellow square number two is below the medium black square. Medium yellow square number one is touching the bottom edge of this block. It is below the medium yellow square number two.
What is above the blue thing? a medium black square that is in block C or a medium black square that is in block B?
medium black square  that is in block C medium black square  that is in block B both of them none of them