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India's three-stage nuclear power program was conceived by Dr. Homi Jehangir Bhabha and aims to eventually utilize India's vast thorium reserves to generate electricity. Stage-1 uses Pressurized Heavy Water Reactors (PHWRs) fueled by natural uranium. These reactors produce plutonium-239 as a byproduct from U-238. Stage-2 uses Fast Breeder Reactors (FBRs) fueled by plutonium-239 produced in Stage-1. These reactors breed more fuel than they consume and also convert thorium-232 into uranium-233. Stage-3 uses reactors fueled by uranium-233 produced from thorium in Stage-2. This allows India to use its enormous thorium reserves (world's largest at ~25%) to generate electricity for centuries. Option A is incorrect: The program is entirely for civilian nuclear power not weapons development. Option C is incorrect: India's program is not for reactor export but for domestic energy security using indigenous resources. Option D is incorrect: The three stages refer to fuel cycles not weapons testing. India has conducted nuclear tests separately.
