Which option correctly uses commas to set off a nonrestrictive clause

a) why did you buy only one bunch of bananas ? it's not enough for the party .

b) can i have a carton of juice, ? it looks very fresh !

c) a kilo of milk ? that's 2 pounds, .

d) i've got only one bar of chocolate . you can have a half of it .

e) cut just a small slice of cheese for me . i'm trying to lose weight .

f) do you want a bowl of soup ? it's delicious !

g) can i have a tin of biscuits, ?

h) do you want a loaf of bread ? i bought three .

i) let's buy a glass of wine to celebrate our wedding anniversary !

j) don't leave the jar of honey on the table . the kids will break it .

k) we need to buy some sweets and a bottle of coke .

l) would you like a cup of hot tea ? you've got a cold !

m) can i have a piece of chocolate cake, ? it's my favourite dessert .

n) i bought a beautiful packet of flowers for my mum's birthday .

hope this !

the answer is: false