Sean used cross multiplication to correctly solve a rational equation He found one valid solution and one extraneous solution If 1 is the extraneous solution which equation could he have solved OA The equation is OB OC The equation is O D 10 2 1 cross multiplying The equation is multiplying ts t cross multiplying The equation is cross multiplying 15 3r S because 1 makes a denominator equal zero and is a solution of the equation derived from because 1 is a solution of both the original equation and the equation derived from cross is because 1 makes a numerator equal zero and is a solution of the equation derived from 10 10 because 1 makes a denominator equal zero and is not a solution of the equation derived from