Consider the following organisations: I. Atomic Minerals Directorate for Research and Exploration II. Heavy Water Board III. Indian Rare Earths Limited IV. Uranium Corporation of India Which of these is/are under the Department of Atomic Energy?

- Atomic Minerals Directorate for Research and Exploration (AMD) is a constituent unit of DAE responsible for geological exploration and mineralogical investigations for atomic minerals. - Heavy Water Board (HWB) was a constituent unit of DAE responsible for the production of heavy water. It has since been restructured and integrated into other DAE units like Nuclear Fuel Complex (NFC). However, historically and at the time this question was likely framed, it was under DAE. - Indian Rare Earths Limited (IREL) is a Public Sector Undertaking (PSU) under the administrative control of DAE, involved in the mining and processing of beach sand minerals. - Uranium Corporation of India (UCIL) is a PSU under the administrative control of DAE, responsible for the mining and milling of uranium ore.