Answer:
Part A: A. "Darzee, the tailor-bird, helped him, and Chuchundra, the musk-rat, who never comes out into the middle of the floor,"(Paragraph 1)
Part B: B. "He knew that mongooses in the garden meant death sooner or later for him and his family, but he wanted to get Rikki-tikki off his guard.” (Paragraph 27)