The main idea of Paragraph 5 is ______. A.to tell people there are various products against compute
The main idea of Paragraph 5 is ______.
A.to tell people there are various products against computer viruses
B.that there are 1100 known viruses now plaguing personal computers
C.some of virus protection products have their strengths and weaknesses as well
D.that the existing virus protection products can destroy all kinds of viruses