What is the spatial relation betweeen the blue block and the orange block?
(A) The blue block is directly above the orange block, and they are in the same stack.
(B) The blue block is directly below the orange block, and they are in the same stack.
(C) The blue block and the orange block are at different stacks.
(D) At least one of the blue block and the orange block does not exist in the presented configurations.