UPSC 2017 CDS II English Paper

SI : There have been two schools of thought which deal with the errors of learners.
S6: Both views are popular today but the second is gaining ground fast.
P : The philosophy of the second school is that errors are natural and they will occur in any learning.
Q : So- errors, they say, is a sign of faulty teaching methods.
R : The first school maintains that if teaching methods are perfect, errors will never occur.
S : They argue that we should con­centrate on how to deal with errors, instead of on method of teaching.
The correct sequence should be