question: As shown in the figure, a torus carpet is to be laid in the lobby of a hotel. The worker only measures the length of the chord AB of the great circle that is tangent to the small circle, and then calculates the area of ​​the torus. If the measured length of AB is 8.0, the area of ​​the torus is ()
  Choices:
  A:16平方米
  B:8π平方米
  C:64平方米
  D:16π平方米
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, a torus carpet is to be laid in the lobby of a hotel. The worker only measures the length of the chord AB of the great circle that is tangent to the small circle, and then calculates the area of ​​the torus. If the measured length of AB is 8.0, the area of ​​the torus is ()
  Choices:
  A:16平方米
  B:8π平方米
  C:64平方米
  D:16π平方米
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, a torus carpet is to be laid in the lobby of a hotel. The worker only measures the length of the chord AB of the great circle that is tangent to the small circle, and then calculates the area of ​​the torus. If the measured length of AB is 8.0, the area of ​​the torus is ()
  Choices:
  A:16平方米
  B:8π平方米
  C:64平方米
  D:16π平方米
question_for_eval: As shown in the figure, a torus carpet is to be laid in the lobby of a hotel. The worker only measures the length of the chord AB of the great circle that is tangent to the small circle, and then calculates the area of ​​the torus. If the measured length of AB is 8.0, the area of ​​the torus is ()
  Choices:
  A:16平方米
  B:8π平方米
  C:64平方米
  D:16π平方米