
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
Three runners start running simultaneously from the same point on a 400-meter elliptical track. They each run clockwise around the course maintaining constant speeds of 3.8, 4.0, and 4.2 meters per second. The runners stop once they are all together again somewhere on the track. How many seconds do the runners run?
A) 1500 seconds
B) 2000 seconds
C) 2500 seconds
D) 3000 seconds

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