Which of the following is NOT a difference between Wager and Contingent Contract?

Wager is an invalid contract while contingent contracts are valid. In wager there is always a reciprocal promise, while in contingent contracts, there is no reciprocal promise. Third party has an interest in wager while third party does not have any interest in contingent contract. Wager is contingent in nature while contingent contracts are never wagering in nature.

Third party has an interest in wager while third party does not have any interest in contingent contract.

Third party has an interest in contingent contract while third party does not have any interest in wager.