考虑有两个因素的多因素APT模型，股票A的期望收益率为16.4%，对因素1的贝塔值为1.4，对因素2的贝塔值为0.8，因素1的风险溢价为3%，无风险利率为6%，如果不存在套利机会，那么因素2的风险溢价为( )。

A．2%

B．3%

C．4%

D．7.75%

93. The diligent student refused the help of others and insisted on working out the difficult maths problem _____.

A．on his own

B．in his own

C．of his own

D．for his own