
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
Carrie the cat and Barrie the bat together weigh $4000 \mathrm{~g}$ more than Rollie the rat. Barrie and Rollie together weigh $2000 \mathrm{~g}$ less than Carrie. Carrie and Rollie together weigh $3000 \mathrm{~g}$ more than Barrie. What is the weight, in grams, of Rollie the rat?
A 250
B 500
C 750
D 1000
E 1250

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