Come of age means growing up. When you have more responsibilities, when you're moving from childhood to adulthood and understand more things. When you are changing but not only physically, also mentally. When you are becoming more MATURE.
I'd say B, seems most likely . Hope that helps
I feel like Jorie is a fake friend I can’t believe she’s writing about everything they did she could have just said we went to the beach not be like “the food was awesome”