Which of the following are valid responses to the fact that Mason’s contract with the police force is due for renewal?(1) Review Mason’s contracts with its other three customers to determine whether they contain a break clause, in order to determine the likelihood of losing any further contracts to other aircraft providers(2) Contact the police force directly and request confirmation as to whether the contract is to be renewed(3) Review the short-term and long-term funding facilities which are available to Mason(4) Review correspondence with the police force to determine the likelihood of the contract being renewed