Could we say that answer choice B is implied by the passage at all, or is it fully wrong and not even implied?

I thought that answer choice B is implied by the passage, but answer choice E is much more strongly implied, making E the correct choice. I believe that B is implied mostly by the third example, where it explicitly says that a small fraction of the people in the room noticed the shirt. This small fraction is not in comparison to the student's expectations, making it possible that answer choice B could be implied in saying that people "tend not to notice."

I thought it was AC E because the author strays from the issue of misnaming and concludes that the obstruction of free-trade would be harmful, which is making an assumption that non-free trade is harmful. I don't see how this is support for the agreement being misnamed since harmful implies more than just the intention of free-trade being disrupted.