Which of the following statements are incorrect regarding the given animals? (i) Both X and Y possess streamlined body and webbed feet. (ii) Both are good swimmers. (iii) Y has a thick layer of fat under its skin with fur on its body, while X has thick skin and a layer of fat under its skin. (iv) Both live together in large numbers and huddle together to keep themselves warm. (v) Y has very strong sense of smell unlike X.

• A. (ii) and (iv) only
• B. (i), (ii) and (iv) only
• C. (ii), (iii) and (v) only
• D. (iv) only