Lorenzo has worked five different jobs in the past five years. It seems like any job he starts ends with a company shutting down and laying off workers. He finished high school, but he hasn't had time (or money) to pursue a college degree. With yearly earnings of about $20,000, he struggles to meet the day-to-day needs of his family. How would you BEST classify Lorenzo's social ranking? A. upper class B. middle class C. working class D. lower class