
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
On "March 5th" this year, a newspaper conducted a survey on "What is the spirit of Lei Feng in the new era?" The number of questionnaires collected from units A, B, C, and D were in an arithmetic sequence, totaling 1000. For reporting purposes, a sample of 150 was drawn from the collected questionnaires by stratification according to the unit. If 30 questionnaires were drawn from unit B, then the number of questionnaires drawn from unit D was ______.

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