
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, 8 units on a side, are removed from a $40$ unit by $60$ unit rectangular sheet of cardboard. Additionally, after removing corners, a 2 unit wide tab is created around the remaining rectangle center, which can be folded up at right angles to the base to create support sections in the longer sides. Calculate the surface area, in square units, of the interior of the box including the base and side supports.
A) 1800 square units
B) 2150 square units
C) 2416 square units
D) 2600 square units

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