Which one of the following is the correct relationship between surface velocity of the rolls (Vr), entrance velocity of work (V0) and exit velocity of work (Vf) in rolling?
(a) $V_{o}> V_{r}> V_{f}$
(b) $V_{f}> V_{r}> V_{o}$
(c) $V_{r}> V_{f}> V_{o}$
(a) $V_{o}> V_{f}> V_{r}$