A.the degree of numerator and denominator are equal
B.
the degree of numerator and denominator are unequal
C.the degree of numerator is one more than degree of denominator
D.the degree of numerator is one less than degree of denominator
Answer: A
If degrees of numerator and denominator were unequal, a pole or zero can be removed. Such a function cannot be a minimum function. Therefore degrees of numerator and denominator must be equal.