A magnetic dipole is placed in a uniform magnetic field of intensity $B$, oriented along the direction of the field. If the magnetic dipole moment is $M$, then the maximum work an external agent can perform in rotating the dipole will be

• A

  $\frac{1}{2}MB$
• B

  $4MB$
• Correct answer
  C

  $2MB$
• D

  $MB$

Hence, the correct answer is option: 'C'.