Confirmation bias refers to the fact that once a belief is established, people try to find examples that are consistent with it and ignore those that are not.
Based on the above definition, which of the following is the most likely the confirmation bias?
The stock manager told a client named Xiaoming that a stock would go up while telling other clients behind his back that the stock would go down. As a result, the stock went up, so Xiaoming trusted the manager very much.