Which of the following are correct about Comparative Public Administration (CPA)?

A. CPA focuses on the structure, process, behaviour, roles and impact of public administrative system at the international level.

B. Comparative Administrative Group (CAG) was set up in 1963.

C. CAG was funded by American Political Science Association.

D. F.W. Riggs was the chairman of CAG from its inception till the end of 1970.

Choose the correct answer from the options given below: