
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 class of 50 students, the following distribution of scores was observed in a test:
- $15\%$ scored 60 points,
- $20\%$ scored 75 points,
- $25\%$ scored 85 points,
- $30\%$ scored 90 points,
- The remaining students scored 100 points.
What is the difference between the mean and the median score on this test?
A) 0
B) 1
C) 2
D) 3
E) 4

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