
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
Weighing the baby at the clinic was a problem. The baby would not keep still and caused the scales to wobble. So I held the baby and stood on the scales while the nurse read off $78 \text{ kg}$. Then the nurse held the baby while I read off $69 \text{ kg}$. Finally, I held the nurse while the baby read off $137 \text{ kg}$. What was the combined weight of all three?

A $142 \text{ kg}$  
B $147 \text{ kg}$  
C $206 \text{ kg}$  
D $215 \text{ kg}$  
E $284 \text{ kg}$

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