A glass was filled with 25 ounces of water, and 0.04 ounce of the water evaporated each day during a 10-day period. What percent of the original amount of water evaporated during this period? Choose the correct choice from the following
A) 0.004 % B) 0.04 % C) 0.4 % D) 1.6 % E) 20 %

Rationale: "in 10 days 10 * 0.04 = 0.4 ounces of water evaporated , which is 0.4 / 25 â ˆ — 100 = 1.6 of the original amount of water . answer : d ."
Answer: D