
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
Six friends sat in a movie theater in a row containing $6$ seats, numbered $1$ to $6$ from left to right. (The directions "left" and "right" are from the point of view of the people as they sit in the seats.) During the movie, Alex went to the lobby to get some snacks. When Alex returned, Bella had moved one seat to the right, Coral had moved two seats to the left, Dan and Eve had switched seats, and Finn had moved one seat to the right, leaving an end seat for Alex. In which seat had Alex been sitting before he got up?
A) 1
B) 2
C) 3
D) 4
E) 5
F) 6

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