Which of the following refers to any disparity in relevant market information among parties in a transaction？

Which of the following refers to any disparity in relevant market information among parties in a transaction？
A、unfair competitive advantage
B、dynamic pricing
C、information asymmetry
D、imperfect competition
正确答案：C
答案解析：
Option A： “unfair competitive advantage” refers to an advantage that a company gains through unethical or illegal means in the market， such as using insider - trading information to gain an edge over competitors. It is not related to the disparity of market information among parties in a transaction， so this option is incorrect.
Option B： “dynamic pricing” is a pricing strategy where the price of a product or service is adjusted in real - time based on various factors like demand， time of day， competitor prices， etc. It has nothing to do with the difference in information among transaction parties， so this option is wrong.
Option C： “information asymmetry” precisely describes a situation where one party in a transaction has more or better information than the other party. For example， in a used - car sale， the seller may know more about the car's hidden problems than the buyer. This is exactly the meaning of any disparity in relevant market information among parties in a transaction， so this option is correct.
Option D： “imperfect competition” is a market structure where there are many sellers， but the products are not homogeneous， and there are barriers to entry and exit. It focuses on the nature of competition in the market rather than the information gap between transaction parties， so this option is incorrect.