If you take another look, none of the angles match up. It looks to me as if that example is just a general help example, not a direct example of the same question.
So I think it's the correct answer in green... 2-1-3-4.
2 is the smallest, 4 is the biggest, and 1 and 3 are between 2 and 4.
(Besides, in the example they show, 3 is the largest angle, not 4... so it's not a verbatim example)