
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
A grocery store sells oranges with two discount pricing schemes: 
1. Buy 4 oranges for 12 cents,
2. Buy 7 oranges for 21 cents.

To avail of either discount, a customer must purchase at least 20 oranges. Calculate the minimum cost if a customer needs exactly 20 oranges, by using any combination of the two discount offers.
A) 50 cents
B) 55 cents
C) 60 cents
D) 65 cents

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