Identify the correct decreasing order of ease of dehydrohalogenation of alkyl halides.
- A$1^{\circ} > 3^{\circ} > 2^{\circ}$
- B$1^{\circ} > 2^{\circ} > 3^{\circ}$
- C$3^{\circ} > 2^{\circ} > 1^{\circ}$
- D$2^{\circ} > 3^{\circ} > 1^{\circ}$
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