Follow the steps for graphing a rational function to graph the function R(x)=If needed, first write the given function as a single rational expression. Then, factor the numerator and denominator of R(x). Select the correct choice below and, if necessary, fill in the answer boxA. R(x)=B. R(x) cannot be factored further.What is the domain of R(x)? Select the correct choice below and, if necessary, fill in the answer box to complete your choice.OA. {x1x²OB. {xx