Which fraction is odd one out? \[\frac{3}{6},\frac{2}{4},\frac{3}{5},\frac{4}{10}\]

• A.  \[\frac{3}{6}\]                  
• B.  \[\frac{2}{4}\]           
• C.  \[\frac{3}{5}\]          
• D.  \[\frac{4}{10}\]