The right of uneasy defense means that the parties have mutual debts and there is a sequence of performance. When the party performing first has clear evidence showing that the other party is incapable of performing the debt, it has the right to suspend the performance of the contract before the other party fails to perform or provides security The provision of the right of uneasy defense is to effectively protect the parties' legitimate rights and interests, prevent fraud by contract, and urge the other party to perform its obligations. Which of the following exercised the right to a disturbing defense? ["Company A and Company B agreed to supply Company B in batches within 5 months, and Company B paid 100,000 yuan per month within 10 months. After the supply of Company A's goods was completed, Company B claimed that Company A's goods were unqualified Refused to pay the remaining payment.", "Party A and Party B sign a house lease contract, which stipulates that on a certain day, both parties will pay rent and deliver the house at the same time. However, when the time is up, Party B's house is still occupied and Party A refuses to pay the rent.", 'A company signs a performance contract with actor A. The company should pay 50,000 yuan in advance for the performance labor service on the specified date. After A is hospitalized for an injury due to a car accident, the company informs A that he will not pay the labor service temporarily.', 'Lao Wang customized a set of equipment to a company, and paid 50,000 yuan in full before the contract went into design and production. Later, Lao Wang requested the termination of the contract because the company that he operated closed down and no longer needed the equipment.']