The question below consist of a set of labelled (P, Q, R, S) sentences. Out of four options given, select the most logical order of the sentences which form a paragraph.

An ultralight airplane is very different from a conventional airplane.

P. Accidents are rarely fatal or even serious because the ultralight lands so slowly and gently and carries very little fuel.

Q. Most ultralights are sold as kits and take about 40 hours to assemble.

R. It looks like a lawn chair with wings, weighs no more than 254 pounds, flies up to 60 miles an hour, and carries about 5 gallons of fuel.

S. Flying an ultralight airplane is so easy that a pilot with no experience can fly one.

Some models now have parachutes attached, while others have parachute packs which pilots can wear.