
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
Consider all six-digit palindromes, which can be represented as $\overline{abcdcba}$, where $a, b, c, d$ are digits and $a \neq 0$. What is the sum of the digits of the sum of all six-digit palindromes?
A) 45
B) 50
C) 54
D) 60
E) 63

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