Given the following dataframe, what is the difference between the 2 data series: df['Nickname'] and df.loc[:, 'Nickname']?

original and copy image

A: df.loc[:, 'Nickname'] is a view of the original dataframe and df['Nickname'] is a copy of original dataframe. B: df['Nickname'] is a view of the original dataframe and df.loc[:, 'Nickname'] is a copy of original dataframe. C: Both are copies of original dataframe. D: Both are views of original dataframe