Given below are two statements. One is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) :
Three identical spheres of same mass undergo one dimensional motion as shown in figure with initial velocities ${\mathrm{v}}_{\mathrm{A}}=5\mathrm{m}/\mathrm{s},{\mathrm{v}}_{\mathrm{B}}=2\mathrm{m}/\mathrm{s},{\mathrm{v}}_{\mathrm{C}}=4\mathrm{m}/\mathrm{s}$ If we wait sufficiently long for elastic collision to happen, then ${\mathrm{v}}_{\mathrm{A}}=4\mathrm{m}/\mathrm{s},{\mathrm{v}}_{\mathrm{B}}=2\mathrm{m}/\mathrm{s},{\mathrm{v}}_{\mathrm{C}}=5\mathrm{m}/\mathrm{s}$ will be the final velocities.
Reason (R) : In an elastic collision between identical masses, two objects exchange their velocities.
In the light of the above statements, choose the correct answer from the options given below :