How does Rikki-tikki's decision to destroy Nagaina's eggs contribute to the story?
A. It makes the other animals turn on Rikki-tikki and refuse to help him defeat Nagaina.
B. Rikki-tikki successfully prevents the birth of future cobras, and this makes family happy.
C. Nagaina leaves the garden after she learns that her eggs have been destroyed, which makes the garden safe again.
D. When Nagaina is about to bite Teddy, Rikki-tikki is able to distract her by telling her there is only one egg left.
