About gift giving etiquette in Germany, which of the following practices is NOT true?
A.
Yellow roses or tea roses are always well received.
B.
Gifts are usually not opened when received.
C.
Do not give carnations as they symbolize mourning.
D.
If you bring wine, it should be imported, French or Italian. Giving German wines is viewed as meaning you do not think the host will serve a good quality wine.