
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
Square corners, each 7 units on each side, are removed from a 25 unit by 35 unit rectangular sheet of cardboard. The sides of the remaining material are then folded up to form an open box.
A) 500 square units
B) 600 square units
C) 679 square units
D) 700 square units
E) 750 square units

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