Leber congenital amaurosis (LCA)is a disorder characterized by early-onset retinal dystrophy which causes severe visual impairment beginning in infancy.The most common cause of the disorder is a mutated intron located in gene CEP290.Targeted deletion of the mutated intron shows promise as a treatment for LCA.The treatment of LCA is an example of the application of which of the following types of biotechnology?
A)PCR B)cloning C)recombinant DNA technology D)microarrays E)genome editing