
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
A $5\times5$ block of calendar dates is given. Firstly, the order of the numbers in the first and the third rows are reversed. Then, the numbers on each diagonal are added. Determine the positive difference between the two diagonal sums.
$\begin{tabular}[t]{|c|c|c|c|c|} \multicolumn{5}{c}{}\\\hline 1&2&3&4&5\\\hline 6&7&8&9&10\\\hline 11&12&13&14&15\\\hline 16&17&18&19&20\\\hline 21&22&23&24&25\\\hline \end{tabular}$
**A)** 6
**B)** 7
**C)** 8
**D)** 9
**E)** 10

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