在浓盐酸中H₃AsO₃与SnCl₂反应的离子方程式为：3SnCl₂+12Cl^-+2H₃AsO₃+6H⁺=2As+3SnCl₆^2-+6M  关于该反应的说法中正确的组合是（　　）

①氧化剂是H₃AsO₃； ②还原性：Cl^-＞As；  ③每生成1molAs，反应中转移电子的物质的量为3mol；    ④M为OH^-；⑤SnCl₆^2-是氧化产物．

A．①③⑤

B．①②④⑤

C．①②③④

D．只有①③

Pro forma statements are forward-looking financial statements that are based on the assumptions about future business conditions. When conducting pro forma statements, which of the following accounts is most likely sales-driven（）

A. Tax rate.

B. Nonoperating income and expenses.

C. Selling, general, and administrative expenses.