In each of the following items, there is a sentence of which some parts have been jumbled up. You are required to rearrange these parts which are labelled P, Q, R and S, to produce the correct sentence. Choose the correct sequence and mark in your answer sheet accordingly.

There must be countries now in which peasants

P: can spend several years in universities

Q: so that

R: a lot of young persons are going

S: without substantial meals

The proper sequence should be: