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Option A: Military basics (rank, branches, structure)
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Option B: “mil” as a measurement (milliradian / mil in shooting)
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Option C: “mil” in finance (million; reading financial statements)
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Option D: MIL-STD standards (e.g., MIL-STD-810, MIL-STD-1553)
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Option E: “MIL” in family terms (mother-in-law) communication
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Option F: Something else — you provide the expansion and context