What is true about the Heartland theory?
(A) It was published thrice in 1904, 1914 and 1943
(B) It was put forward by a German geographer HJ Mackinder
(C) It was based on land versus sea power struggle in world History
(D) The predictions of the theory came to be true and Germany became the superpower in the world
Choose the correct answer from the options given below:
1
(A) only
2
(A) and (C) only
3
(C) only
4
(C) and (D) only