Read the following conversation and answer the question.

M: I'd dike some red roses.

W: Is it your wife's birthday?

M: No, it's our wedding anniversary. She really likes roses. So I give her some every week. I just wish they would stay fresh longer than they do.

W: If you put a little sugar in the water they will stay fresh for days.

M: Really? I want to try to use white vinegar in the water and it helped a little.

W: Sugar is even better.

M: It is worth trying, I will tell my wife. How much do I owe you?

W: Let's see. They are $ 10 a dozen. So that will be $ 5.00.

M: OK. Here you are.

W: Thank you. Here are the flowers.

Question: What does the woman suggest to make roses stay fresh? 

- Put some sugar in the water.

- Prevent roses from the sunshine.

- Put a little vinegar in the water.


Put some sugar in the water.