As shown in the figure, the cross section of a tunnel is a semicircle with a radius of 3.4, and a truck with a width of 3.2 can pass through the tunnel.
Choices:
A:3m
B:3.4m
C:4m
D:2.8m
Please directly answer the question and provide the correct option letter, e.g., A, B, C, D.
Question: As shown in the figure, the cross section of a tunnel is a semicircle with a radius of 3.4, and a truck with a width of 3.2 can pass through the tunnel.
Choices:
A:3m
B:3.4m
C:4m
D:2.8m
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 cross section of a tunnel is a semicircle with a radius of 3.4, and a truck with a width of 3.2 can pass through the tunnel.
Choices:
A:3m
B:3.4m
C:4m
D:2.8m