Assertion: Marwari in Jodhpur/Nagaur/Jaisalmer/Pali. Reason: Dhundhari in Jaipur/Dausa. Both correct, R doesn't explain A.

उत्तर: (B) दोनों सही हैं, परंतु R, A की व्याख्या नहीं करता — Both Assertion and Reason are correct statements, but the Reason does not explain the Assertion. They are independent facts — one does not cause or justify the other.