A conducting circular loop is placed in a uniform magnetic field of 0.04 T with its plane perpendicular to the magnetic field. The radius of the loop starts shrinking at 2 mm/s. The induced emf in the loop when the radius is 2 cm is

• A. \[4.8\pi \mu \,V\]
• B. \[0.8\pi \mu \,V\]
• C. \[1.6\pi \mu \,V\]
• D. \[3.2\pi \mu \,V\]