The Bottle Gourd Appears to Have a Much Different Origin

The bottle gourd appears to have a much different origin than other New World domesticates. Which of the following explains its origins?

A) It floated across the Atlantic Ocean from Africa, where it occurs in the wild.
B) AMS radiocarbon dates of samples and analyses of DNA markers indicate the gourd was carried from Asia by PaleoIndian colonists.
C) It was packed on the back of dogs which accompanied the first humans into the New World.
D) It spread with guinea pigs and Muscovy ducks from western South America.
E) No scientific explanations have been reached as to the origins.