请问social proof具体分类是属于哪个bias的。

问题如下：

Philly’s investment committee also met with their research analyst that covers the computer hardware industry to discuss the potential purchase of LTop Computers, a leading manufacturer of personal computer and tablets. Philly’s research analyst presented his investment recommendation and upgraded his rating on the stock to buy from hold given LTop’s new product introductions and an improved earnings outlook. During the discussion, committee chair Jackson Burke commented that he had suffered a major loss in LTop stock in the past so he would not be able to support buying the stock regardless of the improved outlook. There was little further discussion and the remaining committee members supported Burke’s view.

What behavioral bias most likely influenced the investment committee members to decide against the purchase of LTop stock?

选项：

A.

Loss Aversion

B.

Overconfidence

C.

Social Proof

解释：

Burke’s comment that he had suffered a major loss in LTop stock in the past and because of that experience he would not be able to support buying the stock regardless of the improved outlook and analyst upgrade unduly influenced the other committee members. The committee member’s actions demonstrated Social Proof, they wrongly endorsed the Investment Committee Chair’s judgement and they may not have been fully aware they were doing so.