Read the following context and choose the best option to answer the question.
Context: On the other hand , I read this story about a mother that watched her son struggle and refuse to read until he was 16 . Now , he 's probably read more than me in five years than I have in all of mine . Still mourning the end of the dictionary , Coco cracked open the first page , and I began reading .
Question: How may have the mother felt before her son learned to read ?
Options: 
- She may have been very frustrated it was taking so long
 - None of the above choices .
 - She may not have cared one way or the other
 - She may have been very proud of all he had accomplished


She may have been very frustrated it was taking so long