- India maintains a distinction between its civilian and military nuclear facilities. Under the India-US civil nuclear agreement and India's voluntary separation plan, civilian nuclear facilities are placed under IAEA safeguards. Military facilities are kept outside safeguards. - Access to international nuclear trade, including the import of uranium fuel, is permitted only for the safeguarded civilian facilities. Consequently, reactors using imported uranium must be under IAEA safeguards. Reactors that are not under safeguards are designated for military purposes and therefore use only domestically produced nuclear material. - Thus, the use of imported uranium is a direct consequence of a facility being designated as civilian and placed under safeguards, and facilities not under safeguards rely on domestic supplies. Option B captures this practical distinction: Some reactors (civilian, safeguarded) use imported uranium, while others (military, not safeguarded) use domestic supplies.