下述下颌第二磨牙牙根名称中哪一组是正确的（）

A.近中颊根、远中颊根、舌根

B.近中颊根、远中颊根、远中舌根

C.近中颊根、近中舌根、远中根

D.近中舌根、远中舌根、颊根

E.近中根、远中根

All people, ______ they are old or young, rich or poor, rich or poor, have been trying their best to

help those in need since the disaster.

[      ]

A. whatever

B. no matter

C. whether

D. however