Beginning in 1986, paul rangel was a sales professional for pharmaceutical company sanofi- aventis u. s., llc (s-a). rangel had satisfactory performance reviews until 2006, when s-a issued new expectations guidelines with sales call quotas and other standards that he failed to meet. after two years of negative performance reviews, rangel—who was then more than forty years old— was terminated as part of a nationwide reduction of sales professionals who had not met the expectations guidelines. this sales force reduction also included younger workers. did s-a engage in age discrimination? discuss.