Which of the Following Statements About Single-Nucleotide Polymorphisms (SNPs) Is

Which of the following statements about single-nucleotide polymorphisms (SNPs) is CORRECT?

A) For some disorders, multiple SNPs plus environmental factors are necessary in order for the disorder to present itself.
B) Genotyping SNPs instead of sequencing entire genomes allows researchers to find correlations between genetic risk factors and disease.
C) SNPs are useful in the diagnosis of a disease but not in the prediction of an individual's risk for acquiring that disease.
D) An individual is unlikely to be heterozygous for one or more SNPs.
E) The presence of an SNP in an organism's genome when compared to the "standard" genome of that organism means that a disease condition will develop.