某项目有4种方案，各方案的投资、现金流量及有关评价指标见下表。若已知基准收益率ic=18%，则经比较最优方案为（）。

A．方案A

B．方案B

C．方案C

D．方案D

P. B. Shelley's greatest political lyrics is ______.

A. Men of England



B. An Essay on Criticism
C. The Prelude
D. A Defence of Poetry