For sure it is, if Fortune wills to flee, / No man may stay her course or keep his hold.
A fable is passed down from generation to generation, like a tradition. They also have a lesson/moral to be learned from the story. While a fairy-tale is a story that usually ends in a happy ending and contains tales of princesses, princes, knights, dragons, fairies, and other mythical creatures/beings
Mama means that there are bigger things in life to care about, that she should just be the bigger person.
The answer is B. Hope this helps! :)