Arrange the halogens `F_(2),Cl_(2),Br_(2),I_(2)` in order of their increasing reactivity with alkanes
A. `I_(2) lt Br_(2) lt Cl_(2) lt F_(2)`
B. `Br_(2) lt Cl_(2) lt C_(2) lt I_(2)`
C. `F_(2) lt Cl_(2) lt Br_(2) lt l_(2)`
D. `Br_(2) lt l_(2) lt Cl_(2) lt F_(2)`