The following sentences form a paragraph. The last sentence of the paragraph is given. The rest of the sentences are numbered as P, Q, R, S and T. These five parts are not given in their proper order. Read the sentences and choose the alternative that arranges them in the correct order.

P.  Union Environment Minister Harsh Vardhan said due to concerted efforts by the government, the Air Quality Index of Delhi has improved during the last three years

Q. The national capital recorded its best air quality this year on Tuesday as incessant rains removed pollutants from the air 

R.  An official of the Central Pollution Control Board (CPCB) said rains in the last few days removed pollutants from the air leading to improvement in air quality

S. This was the third time this year that the quality of air was registered as good

T. The Air Quality Index (AQI) on Tuesday was recorded at 38, which is the lowest this year, according to SAFAR

An AQI in the range of 0-50 is considered ‘good’, 51-100 ‘satisfactory’, 101-200 ‘moderate’, 201-300 ‘poor’, 301-400 ‘very poor’ and 401-500 ‘severe’