
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
Toothpicks are used to make a structure that consists of a grid which is 40 toothpicks long and 20 toothpicks wide, and a right-angled triangle is attached on top of it with the base along the width of the rectangle. The height of the triangle is equal to the base. How many toothpicks are used altogether?
A) 1609  
B) 1709  
C) 1809  
D) 1909  
E) 2009

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