Two forces 3N and 2 N are at an angle q such that the resultant is R. The first force is now increased to 6N and the resultant become 2R. The value of q is [HP PMT 2000]

• A.      \[\text{3}0{}^\circ \]      
• B.      \[\text{6}0{}^\circ \]
• C.      \[\text{9}0{}^\circ \]      
• D.      \[\text{12}0{}^\circ \]