Giúp mình câu này với

こんにちは， 皆様、このサイトであまり日本語のpostを見つからなくて、もし質問があ ったら、ぜひcommentに聞いてください。 hello, i couldn't really find any posts on this site about japanese. but if you have any questions about japanese, feel free to ask me down below in the comments/replies. have fun learning !

After the fall of saigon, americans a) were eager to explore the lessons of vietnam b) just wanted to forget about the war c)bought airline tickets to hanoi d)demanded that the u. s. get involved in "another vietnam"

In-text citations go a. in the text of your research paper. b. in a textbook. c. in a text message. d. in an in-text citation page.