Which of the following statements is correct relating to Ratzel's concept of 'Lebensraum'?(i) It is the geographical area within which living organisms develop.(ii) It is the economic and cultural activity of peoples outside their enclosed settled area.(iii) It deals with the relations between human society as a spatial organization and its physical setting.(iv) It speaks 'geopolitik' and studies space from the view point of State.

• A. (i), (ii) and (iii) are correct.
• B. (ii) and (iii) are correct.
• C. (ii), (iii) and (iv) are correct.
• D. (i) and (iii) are correct.