Explanation

Option B is correct because the latent heat of fusion for water at 0°C is approximately 144 BTU/lb, and 200 BTU/hr is a reasonable approximation given the options. Option A is incorrect as it is too low to account for the required energy transfer. Option C is incorrect because this value is significantly higher than the actual heat of fusion. Option D is incorrect because this value is also too high compared to the known physical constant.