When Susan took the rice sock out of the microwave, it was nice and warm. She put it under her sister's neck. This worked great but Susan wanted a warmer sock. What should she do?

A) Add a little water to the rice.
B) Use a larger container for the rice.
C) Heat it in the microwave for more than 60 seconds.
D) Use the oven to heat the sock instead of the microwave.