What causes a solution to a rational equation to be an extraneous solution?
A. When there is more than one solution, one of the solutions is extraneous.
B. If a solution results in zero when substituted into the denominator of the equation, the solution is extraneous.
C. If a solution results in a negative number when substituted into the denominator of the equation, the solution is extraneous.
D. When a solution is a fraction, the solution is extraneous.
