Which of the Following Is Correct with Respect to the Law

Which of the following is correct with respect to the law of intention?

A) Since domestic relationships are serious, there is a legal presumption that in such relationships there is an intention for the parties to be legally bound by their agreements.
B) Where intention is the issue, there is never any presumption for or against intention; the courts will always apply the reasonable person test.
C) Since domestic relationships are serious, the parties to such relationships are always bound by their contracts with each other.
D) In domestic agreements, there is a presumption that there is no intention to be legally bound.
E) In commercial arrangements, there is always an intention to be bound by agreements no matter what the parties state to the contrary.