为什么futures prices和expected spot prices之间是这个关系呢？答案没看懂，这个是哪部分的知识点啊，谢谢！
Merinar closes the meeting by asking if Geng and Jani can explain the relationship between futures prices and expected spot prices. Geng responds, "Futures prices are an accurate estimate of expected future spot prices." Jani argues, "I disagree. Expected spot prices are equal to futures prices plus a risk premium." Merinar concludes the discussion saying, "You are both incorrect. Expected spot prices are equal to futures prices minus a risk premium."
48. Who correctly states the relationship between futures prices and expected spot prices?
A. Geng B. Jani C. Merinar
Answer = B
Jani is correct. The futures price is equal to the expected spot price minus a risk premium. Alternatively, the expected spot price equals the futures price plus a risk premium.
