
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
If the equation $m^2x^2 + (m+2)y^2 + 2mx + m = 0$ represents a circle, find the value of $m$.

A) $m=-1$
B) $m=2$
C) $m=2$ or $m=-1$
D) $m=1$ or $m=-2$

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