Why is the title of this short story “A & P”? Would another title have worked just as well or is this one somehow appropriate to the story?

Link to the story:
http://www.tiger-town.com/whatnot/updike/

Question #1:
Why is the title of this short story “A & P”? Would another title have worked just as well or is this one somehow appropriate to the story? (Setting) What role does the grocery store itself play in the story?

Requirements:

1. Minimum 300 words; maximum 400 words.
2. Use proper MLA format: double-spaced, proper MLA heading, Times New Roman size 12. See pages 381-396 in Introduction to Literature for MLA format.
3. Include a Work Cited page that provides a works cited entry in correct MLA 8th edition (2016) format for the short story your essay addresses.
4. Use at least two quotations from the story.