Where in the question did it state that this was SQL2016?
There shouldn't be. Always expect the latest (officially released) version of SQL Server, unless explicitly stated otherwise.
Even with the new option, why are the tooltip and properties answers incorrect? They're just presenting different views of the same data aren't they?
Yes. But it is obvious one answer is more efficient than the others. There have been lots of questions in the past where you had to pick the most efficient method.
Furthermore, there were two answers that did the same: checking the tooltip and checking the properties window. Since both are the same, but you can only select one answer, it automatically rules out those two answers.