Read the following statements. In response, state ‘True’, ‘False’ or ‘Uncertain’ and explain why:

(a) The necessary condition for strong sustainability is non-declining natural capital and nothing else.

(b) In principle, the safe minimum rule to sustainability and the precautionary principle are one and the same.

(c) The main difference between weak and strong sustainability is the size and not necessarily the nature of the non-declining capital stock requirements.