Which statement is correct for the halogens \({\text{(F}} \to {\text{I)}}\)?

A.     Electronegativity decreases from fluorine to iodine.

B.     Atomic radius decreases from fluorine to iodine.

C.     First ionization energy increases from fluorine to iodine.

D.     Reactivity of the element with sodium increases from fluorine to iodine.

A