NEED THIS ASAP PLEASE HELP why was world war I called the great war?

A. It was the largest war to date
B. people around the world including in the colonies were enthusiastic about participating
C. it was primarily a war that was fought protect great Britain interests
D. it was largely regional and limited to the areas great britain

A. It was the largest war to date.

Explanation:

According to National Geographic, 'It was known as “The Great War”—a land, air and sea conflict so terrible, it left over 8 million military personnel and 6.6 million civilians dead.'

people can see all information on a topic and believe it because of technology

may i have the answer choices?