Will give braniliest

this is an excerpt from the website world war i by high school student alexia dengbai :
i believe world war i was the most destructive war in history. millions were killed or injured, and cities were destroyed. people suffered greatly. there could never again be a war as destructive as world war i. that is why people called it the ''war to end all wars.''

which statement about the credibility of this source is most accurate ?

a. the source is credible because it contains more facts than opinions.
b. the source is not credible because it contains more opinions than facts.
c. the source is credible because the author is an expert on world war i.
d. the source is not credible because it does not contain the date of the war.