To order the trails from longest to shortest, we first need to correct the mileage of each trail:
- Trail A: 6,815 miles
- Trail B: 6,015 miles
- Trail C: 6,023 miles
Now, let's list the trails by their lengths:
- A: 6,815 miles
- C: 6,023 miles
- B: 6,015 miles
Now, putting them in order from longest to shortest, we get:
- Trail A: 6,815 miles
- Trail C: 6,023 miles
- Trail B: 6,015 miles
Thus, the correct order from longest to shortest is A, C, B.
Among the options you provided, the one that matches this order is A, C, B.