Edible portion in Elephant Foot Yam is

Answer: Option A

The edible portion of Elephant Foot Yam is a Modified stem, much of the elephant foot yam can be eaten. When the leaves of the plant wither and die, the corm or tuber can be dug up and eaten. It is a remunerative and profitable stem tuber crop.
Elephant foot yam is a tropical tuber crop and can be raised as a cash crop.
The crop is gaining popularity due to its shade tolerance, easiness in cultivation, high productivity and less incidence of pests and diseases.