Context: They really were stunningly similar , with a spattering of freckles and a puff of pale hair on their heads . If it was n't for the cut and the expressions on their faces , she would n't have been able to tell them apart . She stood back up .
Question: Why are the two individuals hard to tell apart ?
Option 0: The two individuals share similar traits such as freckles and pail hair .
Option 1: The two individuals are   not really doppelgangers ,
Option 2: The two individuals have a very similar cut of hair .
Option 3: The two individuals have almost exactly the same expression on their face .
Answer: 0