For the four sentence (S1-S4) paragraph given below, sentences S1 and S4 are given. From the options P, Q and R, choose appropriate sentences for S2 and S3 respectively.

S1: The majority of migration is from developing to developed countries.

S2: ___________

S3: ___________

S4: This translates into a loss of considerable resources when these people migrate, with the direct benefit accruing to the recipient states who have not forked out the cost of educating them.

Options:

P. These countries have invested in the education and training of young health professionals.

Q. This is of growing concern worldwide because of its impact on the health systems in developing countries.

R. Brain drain is the migration of skilled human resources for trade, education, etc.