Question: How can I create marbles with a shattered glass effect?

  Options: 
 A. Gather marbles, set oven to 400F, place marbles on baking sheet and bake for 20 minutes. After 20 minutes remove marbles and immediately submerge in hot water.
 B. Gather marbles, set oven to 400F, place marbles on baking sheet and bake for 20 minutes. After 20 minutes remove marbles and immediately submerge in ice water.
Answer: B