
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
Four runners start together from the same point on a 600-meter circular track and run clockwise at constant speeds. Their speeds are 3.6, 4.2, 5.4, and 6.0 meters per second respectively. Determine how many seconds they will run before all four runners meet again at the starting point.
A) 800 seconds
B) 1000 seconds
C) 1200 seconds
D) 1800 seconds

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