Ravi had \[\frac{5}{6}\] of a cake. He ate \[\frac{2}{3}\] of it. What part of the cake is remaining?

• A.  \[\frac{4}{9}\]                         
• B.                     \[\frac{5}{9}\]         
• C.                     \[\frac{10}{18}\]                                  
• D.                     \[\frac{1}{6}\]