What do the letters in brackets behind most questions stand for?
If you’ve only watched the anime, you’d be interested in questions with an “(A)” behind it. Question marked with “(M)” deal with the manga only. “(A/M)” doesn’t mean that you’re expected to have watched the anime AND to have read the manga. The answers to those questions reveal info considering both versions. If the question isn’t marked with any of these tags, they don’t deal with the anime or the manga themselves, for example questions concerning merchandising.