10. RNAi methodology uses double-stranded pieces of RNA to trigger a breakdown or blocking of mRNA. For which of the following might it more possibly be useful? (A) to decrease the production from a harmful gain-of-function mutated gene (B) to form a knockout organism that will not pass the deleted sequence to its progeny (C) to raise the concentration of a desired protein (D) to raise the rate of production of a needed digestive enzyme