The following question consists of six sentences of a passage. The first and the sixth sentences are given in the beginning as S1 and S6. The middle four sentences in each have been jumbled up and labelled P, Q, R and S. You are required to find the proper sequence of the four sentences and mark your response accordingly.S1: The houses in the Indus Valley were built of baked bricks.S6: They led outside into covered sewers which ran down the side of the streets.P: This staircase sometimes continued upwards on to the roof.Q: Access to the upstairs rooms was by a narrow stone staircase at the back of the house.R: The drains were built in the walls.S: The houses had bathrooms and water closets, rubbish chutes and excellent drainage systems.The proper sequence should be:

The following question consists of six sentences of a passage. The fir

1.	The following question consists of six sentences of a passage. The first and the sixth sentences are given in the beginning as S1 and S6. The middle four sentences in each have been jumbled up and labelled P, Q, R and S. You are required to find the proper sequence of the four sentences and mark your response accordingly.S1: The houses in the Indus Valley were built of baked bricks.S6: They led outside into covered sewers which ran down the side of the streets.P: This staircase sometimes continued upwards on to the roof.Q: Access to the upstairs rooms was by a narrow stone staircase at the back of the house.R: The drains were built in the walls.S: The houses had bathrooms and water closets, rubbish chutes and excellent drainage systems.The proper sequence should be:
A.	SPQR
B.	PSQR
C.	QRPS
D.	Option not given
Answer» E.