红斑型天疱疮是以下哪种类型天疱疮的良性型（）。

A.红斑型天疱疮

B.大疱性类天疱疮

C.落叶型天疱疮

D.寻常型天疱疮

E.疱疹样型天疱疮

He asked his father             . [ ]

A. where it happens

B. what was happen

C. how it happened