Given below are two statements, one is labelled as Assertion (A) and the other as Reason (R).

Assertion (A): Jet streams discovered during World War II are high altitude easterly winds.
Reason (R): Jet streams flow with a speed of 300-500 km/hour.

Select the correct answer from the codes given below:

A) Both (A) and (R) are true and (R) is the correct explanation of (A)

B) (A) is false, but (R) is true

C) Both (A) and (R) are true, but (R) is not the correct explanation of (A)

D) (A) is true, but (R) is false

This MCQ is part of the UP PSC Previous Year Questions (PYQs) series, focusing on UPPSC Prelims 2024 (GS Paper I)