An RNA Virus Attack on a Plant Triggers the Production

An RNA virus attack on a plant triggers the production of interference RNA (RNAi) such as siRNA.This siRNA is derived from the RNA of the _______ and causes the plant to _______.

A) virus; die from a viral infection
B) plant; become immune to the virus
C) plant; form mechanical barriers to the virus
D) virus; become immune to the virus
E) virus; form mechanical barriers to the virus