Select the incorrect statement:

Options

A. Half life period of all reactions decreases with increase in temperature
B. Half life period of I order reaction is always constant
C. Higher is rate constant of a reaction, lesser will be its energy of activation
D. Rate of reaction whether exothermic or endothermic usually increases with temperature

Explanation

`k = A e^(-E_(a)//RT)`. K depends upom `E_(a)`, T and nature of reaction, but always increases with T. The rate increases with decreases in `E_(a)`.