For an under damped harmonic oscillator, resonance
A Occurs when excitation frequency is greater than undamped natural frequency
B Occurs when excitation frequency is less than undamped natural frequency
C Occurs when excitation frequency is equal to undamped natural frequency
D Never occurs
A Occurs when excitation frequency is greater than undamped natural frequency
B Occurs when excitation frequency is less than undamped natural frequency
C Occurs when excitation frequency is equal to undamped natural frequency
D Never occurs