
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
Carl and Jack shared a 12-slice pizza. Carl wanted a plain pizza, but Jack preferred onions on one-third of the pizza. The cost of the plain pizza was $12, and adding onions on one portion costs an additional $3. If Jack ate all the onion-covered slices and three slices of the plain portion, and Carl ate the rest, how much more did Jack pay than Carl?
A) $1.50$
B) $2.50$
C) $3.50$
D) $4.50$

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