The three species of vultures that are critically endangered that have declined by more than 97 percent since 1990s are:
1. Egyptian vulture (Neophron percnopterus)
2. Oriental white-backed (Gyps bengalensis)
3. Long-billed (Gyps indicus)
4. Slender-billed vulture (Gyps tenuirostris)
Select the answer from the codes given below-
(a) 1, 2 and 3
(b) 2, 3 and 4
(c) 1, 3 and 4
(d) None of the above