Problem: Researchers have designed a Retrospective Cohort study to examine the association between smoking status and lung cancer. They are interested in finding out if having ever smoked is related to getting lung cancer. In their study, they have identified 130 men and women who have reported smoking at some time in their lives, of which 70 developed lung cancer. As a comparison group, they have identified 112 men and women who have never smoked, of which 20 developed lung cancer. Based on this information, please design a 2x2 table below, and calculate the Relative Risk.