Explain how determining an equivalent rational expression is similar to determining an equivalent rational number. Select one: a. To determine an equivalent rational expression, you need to add or subtract the numerator and denominator by the same factor. This is similar to multiplying or dividing the numerator and denominator of a rational number by the same (numerical) factor. b. To determine an equivalent rational expression, you need to multiply or divide the numerator and denominator by the same factor. This is similar to adding or subtracting the numerator and denominator of a rational number by the same (numerical) factor. c. To determine an equivalent rational expression, you need to add or subtract the numerator and denominator by the same factor. This is similar to adding or subtracting the numerator and denominator of a rational number by the same (numerical) factor. d. To determine an equivalent rational expression, you need to multiply or divide the numerator and denominator by the same factor. This is similar to multiplying or dividing the numerator and denominator of a rational number by the same (numerical) factor