Every Syllogism Includes a Conclusion

Every syllogism includes a conclusion.But is it possible to construct an extended argument in such a way that it does not have any conclusions, not even implicit ones?

A) Yes, because the rules are looser for constructing extended arguments than for constructing syllogisms.
B) Yes, because the purpose of an extended argument is to build up a network of connected propositions, not to reach a conclusion.
C) No, because extended arguments are built out of syllogisms, and every syllogism has a conclusion.
D) No, because in the absence of an identifiable conclusion, the proposition that has been assigned the highest number is considered to be the conclusion.
E) No, because in the absence of an identifiable conclusion, the first sentence in the argument is considered to be the conclusion.