Choose the correct order for Bt action as a sprayed biocontrol agent.
- ABt spores sprayed on plant → larva ingests spores → toxin released in gut → larva dies
- BLarva dies → spores are sprayed → toxin is destroyed → plant is eaten
- CBt fixes nitrogen → plant forms nodules → larva becomes predator → toxin released
- DSpores enter rumen → methane forms → larva dies
✓ Correct answer: A
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