有关discount rate的问题

Chan’s previous experience was working as a junior analyst for an equity fund. Morgan is impressed with Chan’s ability to model earnings but realizes he is still relatively inexperienced with macro forecasting models. Morgan mentions to Chan that the uncertainty of future cash flows is reflected by the discount rate, which is composed of three key components. He asks Chan if he knows what they are. Chan responds that the three distinct components can be thought of as

1. the additional return required from investing in a nominal default-free investment for investing in a real default-free investment;
2. the expected return on an inflation-linked bond issued by the government of a developed country; and
3. the increased premium for more actively traded securities relative to less actively traded securities.

Q. Which of Chan’s comments regarding components of the discount rate is most likely correct?

1. 3
2. 2
3. 1

我没搞懂此题考的是哪个知识点，没有解题思路，可否详细讲解一下，谢谢！