A researcher is studying the rII locus of phage T4, which consists of two genes: rIIA and rIIB. Recall that wild-type phage can lyse E. coli K, but that a single rII mutant phage cannot. Three independent rII mutant strains are obtained: 1, 2, and 3. E. coli strain K is coinfected with two rII strains simultaneously and the results are recorded: Infection with 1 and 2 phage = no lysis occurs Infection with 1 and 3 phage = no lysis occurs Infection with 2 and 3 phage = no lysis occurs What can be inferred from these results?.