The angles of quadrilateral are in the ratio 2 : 3 : 5 : 8. The smallest angle is

• A.  \[60{}^\circ \]                         
• B.  \[40{}^\circ \] 
• C.  \[{{20}^{{}^\circ }}\]                                   
• D.  \[{{50}^{{}^\circ }}\]