In general, the temperature of the chemical reaction and the reaction rate are in direct proportional relationship, if the temperature of the chemical reaction increases, this means that the rate of the chemical reaction is also increased. The temerature of the chemical reaction is due to the movement of chemical particles, atoms, molecules, electrons, etc., due to the external influence of the treatment, which is why the temperature is released, due to the interaction of particles and the change in their structure. The increased temperature only means that the rate of chemical reaction has increased more than usual.
The answer is: A.