Can a Sentence Contain Unexpressed Propositions

Multiple Choice

Can a sentence contain unexpressed propositions?

A) Yes, as long as those propositions are asserted.
B) Yes, because sentences only express a small part of the meaning they contain.
C) No, because every possible proposition is expressed in at least one sentence.
D) No, because propositions aren't contained in sentences at all.
E) No, because a sentence expresses every proposition that it contains.