Bias setting of transformer differential relay cannot avoid maloperation due toa) External faultb) CT saturationc) CT mismatchingd) Over-voltage on source side of the transformer

Bias setting of transformer differential relay cannot avoid maloperati

1.	Bias setting of transformer differential relay cannot avoid maloperation due toa) External faultb) CT saturationc) CT mismatchingd) Over-voltage on source side of the transformer
A.	A only
B.	D only
C.	B and C only
D.	B only
Answer» C. B and C only