In a second-order digital notch filter having a notch frequency of 60 Hz and a 3-dB notch bandwidth of 6 Hz and sampling frequency employed is 400 Hz. The normalized angular notch frequency ωo and the normalized angular 3-dB bandwidth Δω3 dB are

• A. 0.3π and 0.03π
• B. 0.6π and 0.03π
• C. 0.3π and 0.06π
• D. 0.6π and 0.06π