Question ID:PT51 S3 Q3 Passage:Safety considerations aside, nuclear power plants are not economically feasible. While the cost of fuel for nuclear plants is significantly lower than the cost of conventional fuels, such as coal and oil, nuclear plants are far more expensive to build than are conventional power plants. Stem:Which one of the following, if true, most strengthens the argument? Correct Answer Choice:CChoice A:Safety regulations can increase the costs of running both conventional and nuclear power plants. Choice B:Conventional power plants spend more time out of service than do nuclear power plants. Choice C:The average life expectancy of a nuclear power plant is shorter than that of a conventional one. Choice D:Nuclear power plants cost less to build today than they cost to build when their technology was newly developed. Choice E:As conventional fuels become scarcer their cost will increase dramatically, which will increase the cost of running a conventional power plant.