Q24:A glass was filled with 10 ounces of water, and 0.01 ounce of the water evaporated each day during a twenty-day period.  What percent of the original amount of water evaporated during this period?

A.     0.002%

B.     0.02%

C.     0.2%

D.     2%

E.      20%

这个题干读不懂