4. An insurer's underwriting policy is generally established by (a) the desk underwriters. (b) officers of the company. (c) the insurance department. (d) negotiation between the company and its agents. 5. The basic function of underwriting is to (a) avoid insuring people who are likely to have losses. (b) to make certain that only very good risks are insured. (c) limit premiums written to an acceptable level. (d) avoid adverse selection. 6. Basically, a retrospectively rated insurance program is a (a) form of class rating. (b) variation of schedule rating. (c) costplus arrangement in which actual losses determine the final premium. (d) a variation of experience rating, since past losses determine the current premium