
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
The $36$ integers from $-15$ to $20,$ inclusive, are arranged to form a $6$-by-$6$ square matrix such that the sum of the numbers in each row, each column, and along each of the main diagonals are all the same. What is the value of this common sum?
A) 10
B) 15
C) 20
D) 25
E) 30

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