Match the following geopolitical thinkers in List-I with their theories in List-II on the basis of the code given below:List - I (Thinkers) a. Friedrich Retzel b. Halford Mackinder c. Alfred Mahan d. Karl Haushofer List - II(Theories)i. Heartlandii. Lebensraumiii. Space and location of Statesiv. Blue water strategyCodes: a b c d

• A. i ii iii iv
• B. iii i iv ii
• C. ii iv i iii
• D. iv iii ii i