Josephine designs a study to examine whether studying with classical music helps improve memory recall. She randomly assigns 50 individuals to an experimental group and 50 individuals to a control group. Participants in both groups listened to music while memorizing 20 words from a list for 10 minutes; participants in the experimental group listened to classical music, while participants in the control group listened to white noise. The participants were then asked to write down as many words as they could remember. On average, the participants in the experimental group recalled 15 words from the list, while the participants in the control group recalled 18 words from the listIn this example, the _ was the independent variable, and the was the dependent variable. A. 20 words on the list, classical music B. type of music, number of words recalled C. classical music, 20 words on the list D. number of words recalled; type of music