Which of the following statements in relation to sustainable development is not true?

• A. Sustainable development is defined as the development that meets the needs of present without compromising the ability of our future generations to meet their own needs.
• B. Sustainability has the main objective of purely focussing on the natural environment.
• C. Sustainable development of various countries and the entire world is the only solution left with mankind to survive for a longer period on Earth.
• D. Sustainable development not only considers the protection of the environment but also the maintenance of economic viability as well as the social and ethical considerations.