Which of the following best describes how a Maxwell–Boltzmann distribution of molecular kinetic energies changes when the temperature of a fixed quantity of gas is increased?
a) The peak of the curve shifts to higher energy and the curve becomes narrower.
b) The peak remains at the same energy, but the curve becomes broader and the peak height decreases.
c) The peak of the curve shifts to higher energy and the curve becomes broader.
d) The peak of the curve shifts to lower energy and the curve becomes broader.