The frequency and work function of an incident photon are n and \[{{\varphi }_{0}}\]. If n­0 is the threshold frequency then necessary condition for the emission of photo electron is [RPET 2003]

• A.            \[\nu <{{\nu }_{0}}\]        
• B.            \[\nu =\frac{{{\nu }_{0}}}{2}\]
• C.            \[\nu \ge {{\nu }_{0}}\]   
• D.            None of these