Consider the reaction between magnesium and hydrochloric acid. Which factors will affect the reaction rate?

I.     The collision frequency of the reactant particles

II.     The number of reactant particles with \(E \geqslant {E_{\text{a}}}\)

III.     The number of reactant particles that collide with the appropriate geometry

A.     I and II only

B.     I and III only

C.     II and III only

D.     I, II and III

D