For the compounds $\;CH_{3}Cl \;,CH_{3}Br\; ,CH_{3}I\;$ and $\;CH_{3}F\;$ , the correct order of increasing C - halogen bond length is :

Question

$(a)\;CH_{3} F < CH_{3}Cl < CH_{3}Br < CH_{3}I\qquad(b)\;CH_{3} F < CH_{3}Br < CH_{3}Cl < CH_{3}I\qquad(c)\;CH_{3} F < CH_{3}I < CH_{3}Br < CH_{3}Cl \qquad(d)\;CH_{3} Cl < CH_{3}Br < CH_{3}F < CH_{3}I$