A glass was filled with 10 ounces of water, and 0.02 ounce of the water evaporated each day during a 30-day period. What percent of the original amount of water evaporated during this period?  Options:  A) 0.006 %  B) 0.06 %  C) 6 %  D) 2 %  E) 60 %

Rationale: "in 30 days 30 * 0.02 = 0.6 ounces of water evaporated , which is 0.6 / 10 â ˆ — 100 = 6 of the original amount of water . answer : c ."
Answer: C