If 0.0001 percent of these molecules were the molecules of some impurity, about how many impurity molecules would this be?
A) 1000 (one thousand: 1 × Image)
B) 1,000,000 (one million: 1 × Image)
C) 1,000,000,000 (one billion: 1 × Image)
D) 1,000,000,000,000,000,000 (one million trillion: 1 × Image)