As a broke college student you see a flyer on campus about a research study on the impact of sunburns. The ad says you will be paid $500 to have a 1 inch by 1 inch square of skin on your forearm severely burned with ultraviolet light. You know that sunburns can have longterm consequences (e. g. skin cancer). However, really need the money to buy textbooks, so you seriously consider participating. What ethical line has this research violated