A. Overwhelmed
Similar to the saying “I felt a rush of emotion”
Answer: This is confusing but I do not agree that much because,
If we simply add the highest number twice from the digits 1-9, 9+9, which is 18. So 18 is the highest number which can be reached so 20 is not a possible number. However, if the problem has said that, we can obtain all the numbers from eleven to twenty by multiplying them, then I think it is possible...
B, as this is a real theme of a book a instead of examples of what could be happening in the book.