What is the difference between the biggest and the smallest fractions among \[\frac{2}{3},\frac{3}{4},\frac{4}{5}\] and \[\frac{5}{6}\]?

• A.  \[\frac{1}{3}\]                       
• B.  \[\frac{1}{4}\]           
• C.    \[\frac{1}{5}\]                       
• D.    \[\frac{1}{6}\]