The angle turned by a body undergoing circular motion depends on time as \[\theta ={{\theta }_{0}}+{{\theta }_{1}}t+{{\theta }_{2}}{{t}^{2}}\]. Then the angular acceleration of the body is [Orissa JEE 2005]

• A.             \[{{\theta }_{1}}\]     
• B.             \[{{\theta }_{2}}\]
• C.                         \[2{{\theta }_{1}}\]               
• D.                         \[2{{\theta }_{2}}\]