question: Hint: Please answer the question and provide the correct option letter, e.g., A, B, C, D, at the end.
  Question: ABCD is a square. Inscribed Circle center is O. Find the the angle of ∠AMK. Return the numeric value.
  Choices:
  (A) 130.9
  (B) 120
  (C) 129
  (D) 339