According to an engineer
P : might hit the market next year
Q : a newly developed air-cooler system
R : that employed in conventional room coolers
S : which is based on a principle radically different from

The proper sequence should be:

A. PQRS

B. QSRP

C. RSQP

D. SQRP

Answer: Option B

Solution(By Examveda Team)

According to an engineer a newly developed air-cooler system which is based on a principle radically different from that employed in conventional room coolers might hit the market next year.