Which of the following is a correct resonance structure of A? 
Definitions:
Nation
A large body of people united by common descent, history, culture, or language, inhabiting a particular country or territory.
Years
Units of time consisting of 365 or 366 days, used to measure time in terms of past, present, and future.
Disability-Free
A state or condition in which an individual is able to function without any physical, mental, or emotional limitations or impairments.
United States
A country located in North America, consisting of 50 states and known for its significant cultural and economic influence worldwide.
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