Consider the following data frame: df_test = df[['body-style,' 'price']] The following operation is applied: df_grp = df_test.groupby(['body-style'], as_index=False).mean() What are the resulting values of: df_grp['price']? 1 point It averages the body-style variable data values. It writes the mean value of each body style price to the data frame. The average price It averages the price for each body style