
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
Andy the Ant starts at $(10, -10)$ on a coordinate plane facing North. Every time Andy moves, he moves in the current direction by a number of units equal to the square of the step count (i.e., on the $n$th move, he moves $n^2$ units), then turns $90^{\circ}$ left. Calculate Andy's position after the 16th move.
A) (154, -138)
B) (152, -136)
C) (156, -140)
D) (160, -145)

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