In the Study of Animal Physiology, Which Statement Expresses an Advantage

In the study of animal physiology, which statement expresses an advantage of the bottom-up approach pursued with high-throughput methods?

A) It is specific in searching for proteins and metabolites instead of genes.
B) It can proceed without preexisting biases regarding which genes are involved in a particular function.
C) It can focus on a defined phenomenon of known importance to the whole organism.
D) It is specific in searching for gene expression instead of profiling proteins or metabolites.