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
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
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