K Determine whether the study depicts an observational study or an experiment. A study is conducted to determine if there is a relationship between hearing loss and exposure to mumps. One thousand patients with hearing loss are asked about their exposure to mumps. Does the description correspond to an observational study or an experiment? A. The study is an experiment because the researchers control one variable to determine the effect on the response variable. O B. The study is an observational study because the researchers control one variable to determine the effect on the response variable. O C. The study is an experiment because the study examines individuals in a sample, but does not try to influence the variable of interest. O D. The study is an observational study because the study examines individuals in a sample, but does not try to influence the response variable