A researcher is interested in comparing the effects of two different types of therapy (music therapy or occupational therapy) on pain perception of people with chronic arthritis. The researcher has two different rehabilitation settings at their disposal. A. What is the independent variable? Include the name of the IV and also the levels of the IV in your response. B. What is the dependent variable? C. Describe how a randomized experimental design would differ from a quasi-experimental design in terms of group assignment. Be specific to the given context.