Roger,Ben and Tom Are Close Friends

Roger,Ben and Tom are close friends.They form a lottery syndicate and agree to contribute equal amounts of money.Roger buys the tickets on behalf of the syndicate.One of his tickets has won $1 million.Roger has refused to share with Ben and Tom.Which of the following statements is most accurate in relation to legal intention?

A) They do not have the right to sue Roger because they made a social agreement and therefore there was no intention to enter into legal relations.
B) They do not have the right to sue Roger because the agreement was not in writing.
C) They have the right to sue Roger because the parties were not in a social or domestic relationship.
D) They have the right to sue Roger if they reasonably believe they have the right to take legal action.