JEE Main 2019 Physics question

A moving coil galvanometer has a coil with 175 turns and area 1 cm. It uses a torsion band of torsion constant N-m/rad. The coil is placed in a magnetic field B parallel to its plane. The coil deflects by 1° for a current of 1 mA. The value of B (in Tesla) is approximately:

• (A)Correct
• (B)
• (C)
• (D)