Given below are four jumbled sentences. Pick the option that gives their correct order.

P. Fasting also leads to a feeling of rejuvenation and extended life expectancy.

Q. This might be due to the detoxification effect of fasting.

R. A study was performed on earthworms that showed the extension of life thanks to fasting.

S. The experiment was performed in the 1930s by isolating one worm and putting it on a cycle of fasting and feeding.

The isolated worm outlived the other worms by 19 generations, while still maintaining its freshness and youthful physiological characteristics.