AN_IIR_SYSTEM_WITH_SYSTEM_FUNCTION_H(Z)=(B(Z))/(A(Z))_IS_CALLED_A_MIXED_PHASE_IF:?$

• A. All poles and zeros are inside the unit circle
• B. All zeros are outside the unit circle
• C. All poles are outside the unit circle
• D. Some, but not all of the zeros are outside the unit circle