—Could you tell me _______?

—It's twenty minutes by underground.[ ]

A. how can I get to your school

B. how much it costs to get to your school

C. how far it is from your home to your school

D. how long does it take me to get to your school

（）负责饮用水源地水量调配和水源工程建设，保障饮用水源地的水量供给，对饮用水源地的水资源实行监督管理。

A.水利部

B.省人民政府

C.当地人民政府

D.水行政主管部门