Step 1: Understanding the Concept:
Rice research in India is conducted under specialized regional and national institutes established by the Indian Council of Agricultural Research (ICAR).
Step 2: Detailed Explanation:
The Indian Institute of Rice Research (IIRR) is situated in Hyderabad, Telengana.
It was originally established as the Directorate of Rice Research (DRR) in 1965 and was later upgraded to an institute in 2014.
The National Rice Research Institute (NRRI) is located in Cuttack, Odisha.
Therefore, the Indian Institute of Rice Research is located in Hyderabad.
Step 3: Final Answer
The correct option is (A).