Option B is correct because the textbook explicitly states that more than 90% of the human genome consists of DNA which does not code for protein. Within these non-coding regions, there exist short sequences of nucleotides called VNTR (variable number tandem repeat) which show a high degree of polymorphism. These sequences form the basis of DNA fingerprinting. The context clearly mentions that VNTRs are located within non-coding regions and these polymorphic sequences are what make each individual unique, enabling identification through DNA fingerprinting.