Which of the following is NOT true about gift-giving customs?

A. In France, wine is not considered a suitable gift for the hostess of a dinner party.

B. In Sweden, it is not customary to bring some wine or flowers when you are invited to a dinner party.

C. In Viet Nam, such things as scissors, knives and other sharp objects shouldn't be used as a gift.

D. In Singapore, it is unacceptable to open the gift right in front of the giver.