Each of the following questions consists of six sentences of a passage. The first and sixth sentences are given as S1 and S6. The middle four sentences in each have been jumbled up and labeled as P, Q, R, and S. Find the proper sequence of the four sentences and mark your response accordingly.

S1: The industrial development of a country depends chiefly on its mineral resources and their successful utilization.

P: Every year the country spends billions of rupees in foreign exchange on the import of very essential minerals and metals like lead, copper, zinc, steel, and oil.

Q: At the same time, India occupies a very prominent position in the world market for producing and exporting other minerals.

R: The chief among which are ores of iron, aluminum, magnesium, and titanium besides high-grade refractories and insulating minerals and gemstones.

S: India, like all other countries of the world, is not self-sufficient in all of its mineral requirements.

S6: The wide availability of minerals in the form of abundant rich reserves made it very conducive for the growth and development of the mining sector in India.