Identify the topic sentence .(A) School children used to know the story of how Abraham Lincoln walked five miles to return a penny he'd overcharged a customer . (B) It's the kind of story we think of as myth. (C) But in the case of Lincoln , the story is true unlike the story of George Washington and the cherry tree . (D) Washington's first biographer invented the tale of little George saying to his father , "I cant tell a lie .(E) I did it with my ax ." (F) What is important in both stories , however , is that honesty was seen as an important part of the American character .