
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 starts 3 miles south of a river which flows directly east. His cabin is located 10 miles east and 9 miles north from his starting point. He wants to water his horse at the river and then go straight to his cabin in the shortest possible path. How far must he travel in total?
A) \(3 + 9\)
B) \(3 + \sqrt{100}\)
C) \(3 + \sqrt{109}\)
D) \(13\)

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