Answer: Option A
Explanation: Behavioral finance refers to the impact of investors behavior and emotions on their decision making. It is based on the concept that investors are not rational decision makers and sometimes get biased as according to their preferences.
Thus, the investors can study this concept so they can fully understand how the psychological factors influence their decision making. This can help the investors in rational decision making for the future.
Hence from the above we can conclude that the correct option is A.