question: As shown in the figure, the foot of the ladder B is away from the wall 1.6, the point D on the ladder is away from the wall 1.4, the length of BD is 0.55, then the length of the ladder is ()
  Choices:
  A:3.85米
  B:4.00米
  C:4.40米
  D:4.50米
query_wo: Please directly answer the question and provide the correct option letter, e.g., A, B, C, D.
  Question: As shown in the figure, the foot of the ladder B is away from the wall 1.6, the point D on the ladder is away from the wall 1.4, the length of BD is 0.55, then the length of the ladder is ()
  Choices:
  A:3.85米
  B:4.00米
  C:4.40米
  D:4.50米
query_cot: Please first conduct reasoning, and then answer the question and provide the correct option letter, e.g., A, B, C, D, at the end.
  Question: As shown in the figure, the foot of the ladder B is away from the wall 1.6, the point D on the ladder is away from the wall 1.4, the length of BD is 0.55, then the length of the ladder is ()
  Choices:
  A:3.85米
  B:4.00米
  C:4.40米
  D:4.50米
question_for_eval: As shown in the figure, the foot of the ladder B is away from the wall 1.6, the point D on the ladder is away from the wall 1.4, the length of BD is 0.55, then the length of the ladder is ()
  Choices:
  A:3.85米
  B:4.00米
  C:4.40米
  D:4.50米