单项选择题

A.AsH3->As3+>As5+>As0>R-As-X
B.As5+>As3+>As3->As0>R-As-X
C.R-As-X>As0>As5+>As3+>AsH3-
D.As3+>AsH3->R-As-X>As0>As5+
E.As0>R-As-X>AsH3->As3+>As5+