Sentence Correction

Though now eaten in large quantities around the world and harmless, the tomato is a member of the generally toxic nightshade family, including belladonna, and was once thought to be poisonous itself as a result.


Though now eaten in large quantities around the world and harmless, the tomato is a member of the generally toxic nightshade family, including belladonna, and was once thought to be poisonous itself as a result.

The tomato, though now eaten in large quantities around the world and harmless, is a member of the generally toxic nightshade family, which includes belladonna, and it was therefore once thought to be poisonous itself.

Once thought to be poisonous itself, the tomato is harmless and now eaten in large quantities around the world, and is a member of the generally toxic nightshade family, including belladonna.

Though now eaten in large quantities around the world and known to be harmless, the tomato was once considered poisonous because it is a member of the generally toxic nightshade family, which includes belladonna.

A member of the generally toxic nightshade family, including belladonna, the tomato was once considered poisonous even though it is harmless and now eaten in large quantities around the world.
[spoiler]
OA is D. Don't you think that D changes the meaning? The original meaning is: tomato is a member of X family and another new information that tomato was considered poisionous.
However, D distorts the meaning by putting the sentence in a cause-effect relationship. Tomato is considered poisionous because it a member of X family! It makes no sense. How come tomato be considered posionous because it is a member of a family?[/spoiler]