Good Afternoon!

Can you please explain this question? Thank you!

Jenny sells lemonade in front of her house in the summer. Several other kids in Jenny's neighborhood also run lemonade stands in the summer. The lemonade market in Jenny's neighborhood is more likely to be perfectly competitive if:

A) each stand tries to get more customers by offering different varieties of lemonade and snacks.

B) some of the neighborhood parents build elaborate booths for their kids' stands while some kids sell from makeshift tables.

C) all of the kids advertise heavily.

D) each lemonade stand sells the same kind of lemonade.