MHT CET Physics question

A coil of copper having 1000 turns is placed in a magnetic field B=4 × T perpendicular to its plane. The cross sectional area of the coil is 0.05 if it turns through 180° in 0.01 sec, then the emf induced in the coil is

• (A)0.4 V
• (B)40 VCorrect
• (C)0.2 V
• (D)4 V