Britain has, for centuries, been slowly tilting with ________.【单选题】

Britain has, for centuries, been slowly tilting with ________.

A. the North-West slowly rising and the South-East slowly sinking

B. the North-East slowly rising and the South-West slowly sinking

C. the South-East slowly rising and the South-West slowly sinking

D. the South-West slowly rising and the North-East slowly sinking