Given below are the jumbled sentences of a paragraph. The first and the last sentence of the jumbled paragraph are given in correct order. Arrange the middle sentences in the correct sequence. i. On the basis of experiments with rats ii. health experts here say that iii. exercise more and consume vitamins. iv. they will live up to 100 years or more v. if humans eat less, vi. and be vigorous in their eighties and nineties.