5.不是应该选a吗，initial 的contract value 为0 ，所以lower the value of contract

2，这3个选项怎么解释，为什么选a，解释。谢谢

1，为什么选a，b c为什么不对，解释，谢谢

13，b和c选项讲的是什么，为什么不对，谢谢

12，b选项为什么选，c选项也要解释，谢谢

请问老师什么是constant returns to scale？含义和前两个选项有什么不同呢？

老师 bond 和 swcurity 有什么区别吗

A fund receives investments at the beginning of each year and generates returns as shown in the table. Year of Investment Amount of Investment Return during Year of Investment 1 $1,000 15% 2 $4,000 14% 3 $45,000 –4% Money-weighted rate of return 用计算器怎么算啊？

26. For its fiscal year-end, Sublyme Corporation reported net income of $200 million and a weighted average of 50,000,000 common shares outstanding. There are 2,000,000 convertible preferred shares outstanding that paid an annual dividend of $5. Each preferred share is convertible into two shares of the common stock. The diluted EPS is closest to: A. $3.52. B. $3.65. C. $3.70. 老师好，我算出来的DEPS是3.889，选不到答案。麻烦老师讲解一下，带计算过程一下哈。

请问realizable value与present value 的区别