A conducting loop is placed in a magnetic field of strength B perpendicular to its plane. Radius of the loop is r, current in the loop is; and linear mass density of the wire of loop is m. Speed of any transverse wave in the loop will be

• A. \[\sqrt{\frac{Bir}{m}}\]
• B. \[\sqrt{\frac{Bir}{2m}}\]
• C. \[\sqrt{\frac{2Bir}{m}}\]
• D. \[2\sqrt{\frac{Bir}{m}}\]