Which of the following events will create a contingent liability on Verizons balance sheet during the current period?

1. Verizon is being sued by AT&T Wireless and legal counsel estimates that it is reasonably possible that Verizon will have to pay $15 million to settle
2. Verizon is being investigated by the DOJ and legal counsel estimates that it is probable that Verizon will have to pay a substantial fine but is unable to determine the amount
3. Verizon is named as one of the defendants in a class action suit and legal counsel estimates that it is probable that Verizon will have to pay $12 million to settle
4. Verizon sues Vonage for patent infringement and legal counsel estimates that it is probable that Verizon will receive $7 million in a settlement
5. C and D