Place the steps to sketch the graph of a rational function in the appropriate order.

a. choose the test numbers to the left and right of each of these places, and find the value of the function at each test number.

b. use test numbers to find where the function is positive and where it is negative.

c. find the function's zeros and vertical asymptotes, and plot them on a number line.

d. sketch the function's graph, plotting additional points as guides as needed

the correct order is c, a,b, d