
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
During the "March 15" of this year, a certain 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 formed an arithmetic sequence, totaling 1,000. For reporting purposes, a stratified sample with a size of 150 was then drawn from the collected questionnaires. If 30 questionnaires were drawn from unit B, find the number of questionnaires drawn from unit D.

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