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The life-cycle costs of an offshore wind farm include costs associated with the conception of the project, design & development cost, manufacturing installation, exploitation and dismantling and cleaning (at the end of the project). The life-time of the project is 60 years. Assume that the project's NPV is positive (using a real discount rate of 5%). We will use the acronym CDC for the present value of the cost of dismantling and cleaning in year 60 Consider the following propositions. Proposition : The present value of the cost of dismantling and cleaning amounts to 5.4% of the future value of these costs (rounded to one decimal). Proposition II: An extension of the life-time of this project by 5 extra years reduces the value of CDC by 21.6% Which one of the following statements is true? O Both proposition I and proposition II are true. O Both proposition I and proposition II are false. O Proposition 1 is true and proposition II is false, O Proposition I is false and proposition is true