If \[\overset{\to }{\mathop{A}}\,\,\times \,\overset{\to }{\mathop{B}}\,\,=\,\overset{\to }{\mathop{B}}\,\,\times \,\overset{\to }{\mathop{A}}\,\] then the angle between A and B is [AIEEE 2004]

• A.  p / 2\[\]              
• B.                 p / 3
• C.                 p            
• D.                 p / 4