Select the answer that places the events that occur in plant defense in the correct order.
1 - the plant cell recognizes double-stranded rna (dsrna) as foreign and cleaves it into fragments.
2 - single-stranded rna (ssrna) molecules bind to the protein-bound small interfering rna (sirna) and are destroyed.
3 - a virus infects the host plant, injecting ssrna into the cell.
4 - the viral genome is replicated and dsrna molecules are formed.
5 - sirna bind to a plant protein complex, which retains only one of the rna strands.