All of the Following Are Common Reasons That the AIDS

Multiple Choice

All of the following are common reasons that the AIDS epidemic is particularly difficult to control except:

A) different types of marriage patterns are practiced worldwide, including re-marrying an infected widow to surviving brother.
B) there is a high proportion of high risk groups within a population.
C) the immune system is well-studied and cannot be controlled for disease.
D) a chemical cure is not likely to be found soon because viruses are poorly understood.
E) the biological factors involved are extremely complex.