What does come to an end mean?

[Thunu]

Business Idiom in English, Intermediate level

ESL/EFL Test #130 "Ways of saying goodbye", question 4

Well, as they say all good things come to an ..........

(a) end
(b) conclusion
(c) finale
(d) finality

Business Idiom in English, Intermediate level

ESL/EFL Test #130 "Ways of saying goodbye", answer 4

Well, as they say all good things come to an end.

Correct answer: (a) end
_________________________

Hello Teachers
Can you explain the meaning of "come to an end" for me?
Thank you
Thu
_________________
Reach an agreement as ploughing, don't let argument happen at crops.

[Giang93]

hi ^^
"come to an end" means as something is completed

[Hieupt]

It's obvious that "end" is the only choice. Supposedly that we didn't understand the question but following with "an" must be ...

I think the question should have a minor change "a(n)"!
_________________
Thank you very much,
Hieu Phan.

P/s: Please just correct if I'm wrong somewhere!