Penguins live in the Polar Regions. Which adaptations enable them to survive? (i) They have a layer of fat under their skin. (ii) They have webbed feet. (iii) they migrate to warmer climates during winter.

• A.  Only (i) and (ii)
• B.     Only (ii) and (iii)
• C.            Only (i) and (iii)
• D.     (i), (ii) and (iii)