
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
What is the difference between the sum of the first 2004 even counting numbers starting from 2, and the sum of the first 2003 odd counting numbers?
A) 6000
B) 6017
C) 6025
D) 6030

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