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The commercial synthesis of Fentanyl, a powerful analgesic, is shown below:

Which of the following reagents would be useful for carrying out Step A?

(A) Lithium aluminum hydride, LiAlH₄

(B) Sodium borohydride, NaBH₄

(C) Sodium cyanoborohydride, NaBH₃CN

(D) Sodium azide, NaN₃

(E) Potassium phthalimide.