Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): The Yajurveda is primarily concerned with the actual performance of the sacrifice (Yajna).
Reason (R): In the Shukla Yajurveda, there are only mantras devoid of ritual instructions (Viniyoga), whereas in the Krishna Yajurveda, mantras are mixed with ritual explanations (Viniyoga-vakya).
In the light of the above statements, choose the correct answer from the options given below: