Your friend has recently joined Air Fry Co., a publicly traded company. Before joining the company, he was not able to beat the market by investing in this company. However, since he has joined Air Fry Co., he has been able to consistently beat the market by investing on this company. Which form of efficiency are we dealing with?

Multiple Choice

A. The market is not efficient in any form.

B. Semi-strong.

C. Weak.

D. Strong.