Janine’s hands are larger than her father’s hands. Which explanation can account for the difference in hand size between father and daughter?
 Janine’s large hands may be the result of a genetic mutation.
 B
 Janine inherited her mother’s hand size.
 C
 The difference in hand size may be due to an environmental cause.
 D
 Though some of the above are more likely than others, all of the above are possible explanations.