320110 According to collision theory, not all collisions between molecules lead to reaction. Which of the following statements provide reasons for the same?

(i) The total energy of the two colliding molecules is less than some minimum amount of energy.

(ii) Molecules cannot react with each other unless a catalyst is present.

(iii) Molecule that are improperly oriented during collision will not react.

(iv) Molecules in different states of matter cannot react with each other.