(a) The maximum amount of insurance that a farmers' mutual fire insurance company may retain on any subject or subjects of insurance reasonably exposed to loss from the same fire shall not exceed the amount prescribed in the following schedule:

Amount_of_Insurance_in_Force Maximum_Risk

$ 100,000 but less than $ 250,000....................$ 5,000 250,000 but less than 400,000.................... 5,000 400,000 but less than 600,000.................... 5,000 600,000 but less than 900,000.................... 5,000 900,000 but less than 1,200,000.................... 6,000 1,200,000 but less than 1,500,000.................... 7,500 1,500,000 but less than 2,000,000.................... 10,000 2,000,000 but less than 2,500,000.................... 12,500 2,500,000 but less than 3,000,000.................... 15,000 3,000,000 but less than 3,500,000.................... 17,500 3,500,000 but less than 7,000,000.................... 35,000 7,000,000 and over...................................... 50,000

(b) The classification of all risks in the above schedule and the percentage given in each shall be uniformly fixed and governed by the bylaws of the insurer.

(c) In determining the amount at risk and retained by the insurer, any valid and applicable reinsurance authorized shall be deducted from the gross amount of risk directly assumed by the insurer.