Answer:
Option: B is the correct answer.
B. The number of excluded values of a rational expression cannot exceed the degree of the denominator.
Explanation:
We know that a rational expression is a expression of the form:

where p(x) and q(x) are polynomials.
Excluded value--
The excluded value of a rational expression are the values where the denominator of the expression is zero.
Also, the number of zeros of a polynomial is always less than or equal to degree of the polynomial.
Hence, the number of excluded values of a rational expression cannot exceed the degree of the denominator.
The answer is:
Option: B