S1: When a satellite is launched, the rocket begins by going slowly upwards through the air. P: However, the higher it goes, the less air it meets. Q: As the rocket goes higher, it travels faster. R: For the atmosphere becomes thinner. S: As a result there is less friction. S6: Consequently, the rocket still does not become too hot. The Proper sequence should be:

1. A Option A: QPRS
2. B Option B: QSPR
3. C Option C: PQRS
4. D Option D: PQSR

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