Kavango River (Pty) Ltd, a company that owns and runs a transport business, wishes to take out a policy against damage to its vehicles. The manager of the business, Kativa, previously managed a similar transport business, and over a period of one year, seven of the vehicles used by that business were involved in accidents caused partly by the negligence of its own drivers. The directors of Kavango River have never been informed of these facts and do not bring them to the insurance company's attention. Are they under a duty to do so? Explain.