Which dialogue from Alice's Adventures in Wonderland is least realistic?
a. 'Have some wine,' the March Hare said in an encouraging tone.
b. 'Then it wasn't very civil of you to offer it,' said Alice angrily.
c. 'Have you guessed the riddle yet?' the Hatter said, turning to Alice again.
d. 'No, I give it up,' Alice replied: 'what's the answer?'