滑动变阻器是通过改变接入电路的电阻丝的____________来改变电阻的。某滑动变阻器上标有“200Ω  1A”字样，其中200Ω指的是____________，1A指的是___________。

— Speak ______, please, because I can't hear a word from the back. 

— Well, it's ______ enough. [ ]

A. loudly, loudly

B. louder, loud

C. loud, louder

D. loud, too loud