Which of the Following Is an Example of the Doctrine

Which of the following is an example of the Doctrine of Signatures?

A) A cure for watery,runny eyes is an eyewash made from onion.
B) A hyper-diluted solution of snake venom can treat the effects of a snake bite.
C) Liverworts,which look like human livers,can treat psoriasis of the liver.
D) To diagnose an illness,examine the liver of a sacrificed sheep.
E) To heal a wound from a sword,apply a poultice to the sword that made the wound.