One should use porcelain and not metal containers in a microwave oven because _______A. Charge may accumulate on the metal surface and there is danger of getting a shock.B. Porcelain vessels are better conductors of heat and thus food gets cooked quickly.C. Porcelain vessels have a high melting point.D. Porcelain vessels are cheaper than the metal containers.

• A. A
• B. B
• C. C
• D. D