Which of the Following Is a Correct Statement Regarding Trade-Secret

Which of the following is a correct statement regarding trade-secret protection under common law?

A) A trade secret is protected from unlawful appropriation by competitors as long as it is kept secret and consists of elements not generally known in the trade.
B) A trade secret is protected from unlawful appropriation by competitors for ten years so long as no competitor gains access to the secret through lawful means.
C) A trade secret is protected from unlawful appropriation by competitors for twenty years so long as no competitor gains access to the secret through lawful or unlawful means.
D) A trade secret is protected from unlawful appropriation by competitors for thirty years.
E) A trade secret is protected from unlawful appropriation by competitors for seventy years.