You own a house worth $400,000 that is located on a river. if the river floods moderately, the house will be completely destroyed. this happens about once every 20 years. if you build a seawall, the river would have to flood heavily to destroy your house, which only happens about once every 100 years. if you build a seawall, the river would have to flood heavily to destroy your house, which only happens about once every 200 years. what would be the annual premium for an insurance policy that offers full insurance? for a policy that only pays 75% of the home value, what are your expected costs with and without a seawall? do the different policies provide an incentive to be safer (i. e., to build the seawall)?