The correct option is A UNIDO - Vienna
The United Nations Industrial Development Organization (UNIDO) helps developing countries and economies in transition in their fight against marginalization. It is a specialized agency in the United Nations system, headquartered in Vienna, Austria. As a specialized agency, UNIDO has its own constitution, its own member states, its own policymaking organs, its own executive head and its own regular budget. Moreover, UNIDO disposes off voluntary contributions to finance developmental activities.