How would you respond to roger? a. roger is incorrect. the melting wax is a physical change but there is no chemical change taking place. b. roger is correct. lighting the match is a chemical change and burning the candles is a physical change. c. roger is correct. the melting wax is a physical change and the burning candle wick is a chemical change. d. roger is incorrect. only a chemical change is taking place as evidenced by the light and heat of the burning candles?