
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
A cowboy is 5 miles south of a creek flowing east. The cowboy's cabin is 5 miles west and 10 miles north of his current position. The shortest path that allows him to drink water with his horse at the creek and head back to his cabin needs to be calculated, assuming he can only cross the creek once and must return back over the same crossing point.
A) $15$ miles
B) $18$ miles
C) $20$ miles
D) $25$ miles

Present the answer in LaTex format: \boxed{Your answer}
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