Linda and Janus were trained by San Trube as a manager for First Family Bank, a Canadian chartered bank. Trube taught Janus that it was good practice to ensure that any residential mortgage loan which exceeded 75% of the value of the property was insured by C.M.H.C. Trube told Janus that if a mortgage was so insured, she could feel comfortable lending up to 90% of the value of the property. Janus found Trube to be overly cautious. After his retirement, she became manager and sent a memorandum to the loans officer in her branch authorizing him to make mortgage loans up to 90% of value without insurance. Explain to the loans officer whether this policy is acceptable.