
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
On a trip from the United States to France, Julia took $d'$ U.S. dollars. At the border, she exchanged all her money, receiving $8$ Euros for every $5$ U.S. dollars. After spending $80$ Euros, she had $d'$ Euros left. What is the sum of the digits of $d'$?
A) 5
B) 6
C) 7
D) 8
E) 9

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