One Way Scientists Hope to Use the Recent Knowledge Gained

One way scientists hope to use the recent knowledge gained about noncoding RNAs lies with the possibilities for their use in medicine. Of the following scenarios for future research, which would you expect to gain most from RNAs?

A) exploring a way to turn on the expression of introns
B) targeting siRNAs to disable the expression of an allele associated with an autosomal recessive disease
C) targeting siRNAs to disable the expression of an allele associated with an autosomal dominant disease
D) creating knockout organisms that can be useful for pharmaceutical drug design
E) looking for a way to prevent viral DNA from causing infection in humans