please help me with these questions. Thank you!!!!!

When a contract is deemed to be frustrated only the obligations of the seller is discharged. Select one: O True O False In a civil action in the Ontario Superior Court of Justice over $ 50,000.00, mediation must occur within 90 days of the delivery by the defendant to the plaintiff of the statement of defence. Select one: O True O False Where two parties have completed negotiating a contract and one says to the other let's put it in writing, the contract must be put in writing or there is no contract. Select one: O True O False Where a contractor enters into a contract with another party to do work on behalf of that party, and the contractor is negligent in the performance of the work, the other party can be sued with the contractor on the basis of vicarious liability. Select one: O True O False