Some parts of a sentence have been jumbled up, and labelled P, Q, R and S. Select the option that gives the correct sequence in which these parts can be rearranged to form a meaningful and grammatically correct sentence.

While I was inside

P. struggling with maths and
Q. chemistry, my father was constructing a
R. the classroom in Cambodia,
S. temporary scaffolding on

the campus grounds.

A

RPQS

B

PRQS

C

RPSQ

D

RSQP