
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
Homer began peeling a pile of 60 potatoes at the rate of 2 potatoes per minute. Six minutes later, Christen joined him, peeling at the rate of 3 potatoes per minute. Nine minutes after Homer started, Lin also joined them, peeling at the rate of 4 potatoes per minute. When they finished peeling all the potatoes, how many potatoes had Lin peeled?
A) 12
B) 15
C) 17
D) 21
E) 23

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