RNA Interference Would Be Most Useful as a Treatment in Which

Multiple Choice

RNA interference would be most useful as a treatment in which of the following scenarios?

A) homozygous expression of the defective hemoglobin gene in sickle cell anemia
B) lack of expression of the chloride channel gene in cystic fibrosis
C) death of insulin-producing cells in type 1 diabetes
D) overexpression of inflammatory genes in Crohn disease