Ⅰ度冻伤（）

A.伤及表皮

B.伤及皮肤全层或皮下组织

C.伤及真皮

D.伤及肌肉骨骼

E.体温降低，组织器官功能障碍乃至丧失

I don’t know _________.

A．what is the matter with him

B．what the matter is with him

C．what with him the matter is

D．what the matter with him is