A physician wants to evaluate compare the impact of a new kidney transplant medication to that of an existing and widely use kidney transplant medication. 100 Emory transplant patients (all between the ages of 40-50 with no other underlying health conditions) will be randomly assigned to receive one of the two medications. After 6 months, the physician will measure kidney function using creatinine levels. A. What is the independent variable? B. What is the dependent variable? C. What is the design of the study/What type of study is this?