In elastic collision between spheres `P` and `Q` of equal mass but unequal radii , move along a straight line. Which of the following may be correct after the collisions ? (i) `P` comes to rest and `Q` moves with velocity of `P`.
(ii) `P` and `Q` move with equal speeds making an angle of `45^(@)` each with original line of motion.
(iii) `P` and `Q` move with unequal speeds , making angles of `30^(@)` and `60^(@)` with the original line of motion , respectively.
(iv) `P` comes to rest:
A. `(i)` only
B. `(iv)` only
C. `(iii)` only
D. `None