question: Hint: Please answer the question and provide the correct option letter, e.g., A, B, C, D, at the end.
  Question: What is the size of the shaded area under the curve? Round the answer to 2 decimal places
  Choices:
  (A) 7.07
  (B) 6.97
  (C) 7.14
  (D) 9.00