A circular disc of radius 0.2 metre is placed in uniform magnetic field of induction $\frac{1}{\pi}[\frac{Wb}{m^2}]$ in such a way that its axis makes an angle of $60^o$ with $\overrightarrow{B}$ . The magnetic flux linked with the disc is -

Question

( A ) 0.02 Wb
( B ) 0.01 Wb
( C ) 0.08 Wb
( D ) 0.06 Wb