This article is organized using a problem and solution structure. Why do you think the author chose to organize the information this way? A) to highlight the relationship between the new astronomical sign language dictionary and the French Sign Language dictionary
B) to show that the international sign language for astronomical words has fixed the communication between countries
C) to describe what issues people who are deaf have faced in France when trying to go to school and how it is much different now
D) to explain how it has been difficult for people who are deaf to learn astronomy and what the IAU is doing to help them