JEE Main 2023 Physics question

A bar magnet with a magnetic moment 5.0 is placed in parallel position relative to a magnetic field of 0.4 T. The amount of required work done in turning the magnet from parallel to antiparallel position relative to the field direction is :

• (A)Zero
• (B)1 J
• (C)4 JCorrect
• (D)2 J