
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 boat's speed in still water is 12 mph. It sails in a river with a current of 4 mph. The boat sails the same distance downstream as upstream. Compute the ratio of the average speed for the round trip to the boat's speed in still water.
A) $\frac{5}{4}$
B) $\frac{1}{1}$
C) $\frac{8}{9}$ 
D) $\frac{7}{8}$
E) $\frac{9}{8}$

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