Which of the following is part of the exposition in "Rikki-tikki-tavi"?

Which one is right

Rikki-tikki-tavi destroys Nag's and Nagina's eggs.

• Nagina bites Teddy while he's sleeping next to the mongoose.

• Rikki-tikki-tavi is snatched from his home during a flood.

• Nagina is killed, the garden is safe, and all the animals rejoice.

Rikki-tikki-tavi is snatched from his home during a flood.