A 10-V battery has been supplying power to a flashing light for 10 hours. The flashing light is on for 1 second and is off for 2 seconds, in a repeating cycle. If the resistance of the light (when it is on) is 10 :, then how much energy has been supplied by the battery for every 30-minute period of time? A) 3,000 J. B) 6,000 J. C) 12,000 J. D) 36,000 J. E) 120,000 J