The rate of a certain chemical reaction is directly proportional to the
square of the concentration of chemical A present and inversely proportional
to the concentration of the chemical B present . If the concentration of
chemical B is increased by 100 persent, which of the following is closest to
the percent change in the concentration of chemical of A required to keep
the reaction rate unchanged?
A 100% increase
B 50% decrease
C 40% decrease
D 40 % increase
E 50% increase | 
