A baker carries out three separate steps while preparing a dessert:
Step I Chopping a bar of dark chocolate into smaller pieces.
Step II Melting the chopped chocolate in a double boiler.
Step III Baking a batter so that it rises as bubbles of CO2 form.
Which row correctly classifies each step as a physical (P) or chemical (C) change?
a) Step I (P)Step II (P)Step III (P)
b) Step I (P)Step II (P)Step III (C)
c) Step I (P)Step II (C)Step III (C)
d) Step I (C)Step II (P)Step III (C)