In the Massive Antismoking Campaign in China in 1989, the Results

In the massive antismoking campaign in China in 1989, the results indicated that ____% of the 10,000 fathers in the intervention group quit smoking for at least six months, in comparison to a control group of 10,000 in which only ____% quit smoking.

A) 1; 0.1
B) 12; 0.2
C) 22; 2.2
D) 50; 25