2. A certain commodity increased in price by $25 \%$ in January, and in April it needs to be reduced to the original price ( ).
A. $30 \%$
B. $25 \%$
C. $20 \%$
D. $15 \%$
2. C. Let the original price be 1, then $(1+25 \%) (1-x \%)=1$, we get $x \%=20 \%$.