Because Sarah is a minor, she lacks capacity to enter into contracts. Sarah's mother, Beth, wants to make Sarah her agent, including having Sarah enter into contracts on Beth's behalf. Sarah enters into a contract with a third party on Beth's behalf and Beth later claims that she is not bound by the contract because Sarah lacked capacity to enter into it. Is Beth bound by the contract?

Yes, if Beth was a disclosed principal.

No, because Sarah, as a minor, lacked capacity to enter into the contract.

No, unless Beth ratified the contract.

Yes, because Beth had capacity to enter into contracts.