Fred, a recently diagnosed diabetic, started to feel very dizzy and faint. "I don't know what to do," he slurred, "I've used my insulin like the doc said and I didn't eat anything since breakfast, never mind anything sweet." His friends couldn't agree what to do. Jim suggested giving sugar as he was sure he'd heard that before. Mike disagreed. He knew diabetes caused high blood sugar, so suggested giving Fred another shot of insulin. Who was correct?