Prototypes of international agricultural research centers are the ? I- international Center for the Improvement of Maize and Wheat (CIMMYT) II- International Rice Research Institute (IRRI) III- Synthetic Rubber Research Institute (SRRI) IV- Center for International Agricultural production Control (CIAPC)

• A. I only
• B. I and II only
• C. III and IV only
• D. Iv only