How is this not E?

I don't understand, this is one I genuinely disagree with.

Hi Tom, The issue with E here is that the author is just saying maybe it's other problems that manifest in financial terms so the couples wrote "money". However, this doesn't necessarily imply that the couples CANNOT accurately describe their own problems. Maybe, for example, a problem is emotional connection but they don't want to write that for whatever reason (maybe they're embarrassed or something) so they write "money" instead. However, B captures the idea here without running into the problem about accuracy. The alternative explanation is that some of the couples wrote "money" when it was really about other underlying problems. And this is what (and all that) the argument is saying.