First is A second is B third is A and B I THINK
Answer:
ture
Explanation:
because i've harded about it
1. .com .org .edu those have a big part because .com is profit and .org is non profit.
2. It shows who wrote it
3. It shows a bio of who wrote it (So you know their actually qualified)
4. And it has sources to back up for what they say.