A \( 1^{\circ}>2^{\circ}>3^{\circ}>\mathrm{CH}_{3}-\mathrm{X} \)
B \( 2^{\circ}>3^{\circ}>1^{\circ}>\mathrm{CH}_{3}-\mathrm{X} \)
C \( 3^{\circ}>2^{\circ}>1^{\circ}>\mathrm{CH}_{3}-\mathrm{X} \)
D \( \mathrm{CH}_{3}-\mathrm{X}>1^{\circ}>2^{\circ}>3^{\circ} \)