Multi-choice problem: Choose from the options at the end, and answer how do you do this: To prevent the nasty clumpy black chocolate burn when melting the chocolate for the pizza cookies

Select from the following.
A). Put water into a saucepan and boil it, gently putting the glass bowl into the pan, then put the chocolate into the glass bowl stirring it constantly;
B). Put water into a saucepan and boil it, gently putting the plastic bowl into the pan, then put the chocolate into the plastic bowl stirring it constantly;
A).