A human body while sleeping generates about 300 BTUs of body heat per hour. If two people are sleeping in a bedroom that is 12 ft × 12 ft × 9 ft, how many BTUs per cubic foot do they produce in 8 hours? (to the nearest tenth) A) 0.2 BTUs/ft3 B) 0.9 BTUs/ft3 C) 1.9 BTUs/ft3 D) 3.7 BTUs/ft3