
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
Megan writes down a list of five numbers. The mean of her first three numbers is -3. The mean of her first four numbers is 4. The mean of her first five numbers is -5. What is the difference between her fourth number and her fifth number? 

A) 66  
B) 55  
C) 44  
D) 33  
E) 22

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