I’m not sure about this but this looks like a legit conversation to me:
Hello can I help you?
Yes, please, I would like a bag of sugar.
Yes, of course. Anything else?
I would like a loaf of bread and a carton of milk, please.
Is that all?
Yes, that’s all.
That’s twenty pounds, please.
Here you are!
Thank you!
Answer:
A
Explanation:
It cannot be B because it has everything correct except it doesn't have a comma separating it.
C is not acceptable either, because there is an unnessasary comma before weekend. It also does not have a period at the end of the sentance.
D has no comma, and no period, so it wouldn't work either.