JEE Main Physics question

A flywheel of moment of inertia 0.4 kg·m² and radius 0.2 m is free to rotate about a central axis. If a string is wrapped around it and it is pulled with a force of 10 N, then its angular velocity after 4 s will be

• (A)10 rad s⁻¹
• (B)5 rad s⁻¹
• (C)20 rad s⁻¹Correct
• (D)None of these