What is Walmart's legal form of entity (corporation, partnership, LLC, or something else?) and why did they choose this form.

Our discussion this week ask us:

• Select a business you are familiar with or by conducting a search of the internet.
• Identify its business structure.
• Explain the advantages and disadvantages of that designation for the business.
• Provide examples.

I am having a hard time breaking Walmart down. Thanks for the help!