Critical Reasoning (CR) | Re: Many managers of mutual funds proclaim that they have been able to gen

IanStewart hello expert, I have a doubt. I rule out D because it says “in general market”, while in the theory it says “in efficient market”, and these two are definitely different in Economics.
Also, I picked B cuz the passage says mutual fund managers can generate consistently higher rates of return, so we should explain why they can get high return. And B explains that.
Hope to get your opinion, muchthanks.