Which excerpts from the text best support the answer to ? Choose two options. a. Rikki-tikki knew that he must catch her, or all the trouble would begin again. b. [H]is little white teeth were clenched on her tail, and he went down with her Darzee said: ‘It is all over with Rikki-tikki! We must sing his death- song. d. So he sang a very mournful song that he made up all on the spur of the minute