 
 <prompt> ```Answer dis question: One scientist see dinosaur bones. Wetin fit helep the scientist know how old the dinosaur bones be?
Options: [i] the birds wey dey live for the area wey the bones dey; [ii] the weather conditions for the area wey the bones dey; [iii] the kind of trees wey dey live for the area wey the bones dey; [iv] the index fossils wey dey the area wey the bones dey;. Answer:``` <response>: ```[iv]```
Translate the text above to Nigerian pidgin. If there is programming code in it, leave as is. Do not add any extra statement in your response: 