Which of the following statements is/are correct regarding environmental concerns in global politics?
i. Throughout the world, cultivable area is barely expanding any more, and a substantial portion of existing agricultural land is losing fertility.
ii. Grasslands have been overgrazed and fisheries overharvested.
iii. Water bodies have suffered extensive depletion and pollution, severely restricting food production.
Select the correct answer using the options given below:

A. i and iii

B. i and ii

C. ii and iii

D. i, ii and iii

Answer: Option D