Given below are two statements, one labelled as Assertion A and the other labelled as Reason R.Assertion A: Climate change has the potential to affect security as it threatens to increase existing tensions between developed and developing countries.Reason R: Shortages of vital resources like food and water can create a mass movement of refugees.

• A. Both A and R are true and R is the correct explanation of A.
• B. Both A and R are true but R is not the correct explanation of A.
• C. A is true but R is false.
• D. A is false but R is true.