To solve the rational equation 4 over x plus fraction numerator x over denominator x minus 4 end fraction equals fraction numerator x plus 1 over denominator 3 end fraction, how can the expression fraction numerator x over denominator x minus 4 end fraction be rewritten using the least common denominator?


a.)
fraction numerator 3 x over denominator 3 left parenthesis x minus 4 right parenthesis end fraction


b.)
fraction numerator 4 plus x over denominator left parenthesis x minus 4 right parenthesis end fraction


c.)
fraction numerator x squared over denominator x open parentheses x minus 4 close parentheses end fraction


d.)
fraction numerator 3 x squared over denominator 3 x left parenthesis x minus 4 right parenthesis end fraction