How Are Databases of Variants Used to Help Find Disease

Multiple Choice

How are databases of variants used to help find disease gene candidates?

A) Variants from individuals that do not have the syndrome can be used to eliminate those variants as involved in causing the disease.
B) They can indicate the probability of different variants appearing in a population.
C) Variants from individuals that do not have the syndrome are not useful for this purpose.
D) They can indicate rare variants that will help with the genetic identification of individuals.