Bill and Mary wanted to have a snack after school. They heated some milk in a pot on the stove to make hot chocolate. They also popped some popcorn in the microwave oven. How did Bill and Mary transfer heat energy to make these snacks? A. heating milk by radiation; popping popcorn by radiation
B. heating milk by radiation; popping popcorn by convection
C. heating milk by conduction; popping popcorn by radiation*
D. heating milk by convection; popping popcorn by conduction