
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 rural guesthouse has 6 rooms, each uniquely decorated with a different theme. On a certain day, 6 friends decide to spend the night with no other guests around. They must room in any combination, but there must be at most 3 friends per room and exactly 2 rooms must accommodate 3 guests each. In how many ways can the guesthouse manager assign the friends to the rooms?
A) 1200
B) 1800
C) 2400
D) 3600

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