JEE Main 2023 Physics question

A conducting circular loop of radius cm is placed perpendicular to a uniform magnetic field of 0.5 T. The magnetic field is decreased to zero in 0.5 s at a steady rate. The induced emf in the circular loop at 0.25 s is:

• (A)emf = 1 mV
• (B)emf = 5 mV
• (C)emf = 100 mV
• (D)emf = 10 mVCorrect