
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 large square floor has a smaller square area tiled in black sitting exactly at the center of the floor with its sides parallel to the floor's sides. The rest of the tiles on the floor are white. If there are 441 black tiles, find the total number of tiles on the floor.
A) 625
B) 676
C) 729
D) 841
E) 900

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