A Main Statement is followed by four Statements labelled P, Q, R and S. Choose the ordered pair of the Statements where the first Statement implies the second, and the two Statements are logically consistent with the Main Statement.

Main Statement:

Ravi will either take the morning train or the evening bus.

Statement P: Ravi takes the morning train.

Statement Q: Ravi takes the evening bus.

Statement R: Ravi does not take the morning train.

Statement S: Ravi does not take the evening bus.

Select the correct answer.