With Respect to Genomewide Association (GWA) Studies, Which, If Any

Multiple Choice

With respect to genomewide association (GWA) studies, which, if any, of the following statements, is true?

A) GWA studies to determine genetic susceptibility to human complex disease usually use 1000 polymorphic SNPs markers that are distributed across the genome
B) Unlike linkage analyses, GWA studies are ideally suited to identifying genetic susceptibility in genetically heterogeneous diseases.
C) GWA studies have been very important in elucidating the pathogenesis of complex diseases and in providing new disease biomarkers.
D) GWA studies have transformed our ability to predict disease risk.