1 : Though the exact dimensions P : involved in the rocket Q : and the precise amounts R : it is clear that such a large scale operation S : are yet to be ascertained 6 : could not have been possible without the connivance of officials at various levels. The Proper sequence should be:

Answer: Option B

Though the exact dimensions and the precise amounts involved in the rocket are yet to be ascertained it is clear that such a large scale operation could not have been possible without the connivance of officials at various levels.