
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
In a university with 800 students, 25% of the undergraduates play a musical instrument, while 20% of the postgraduates do not play a musical instrument. In total, 35.5% of the students do not play a musical instrument. How many undergraduates play a musical instrument?
A) 54
B) 56
C) 57
D) 58
E) 59

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