If p and q are any two rational numbers then the rational number between them is

• A.  \[\frac{1}{2}\left( p\times q \right)\]                    
• B.  \[\frac{1}{2}\left( p-q \right)\]        
• C.  \[\frac{1}{2}\left( p+q \right)\]
• D.  \[\frac{1}{2}\left( p\div q \right)\]