In which of the following options the order arrangement does not agree with the variation of property indicated against it?

Options

A. `Li lt Na lt K lt Rb` (increasing metallic radius)
B. `Al^(3+)lt Mg^(2+)lt Na^(+)lt F^(-)` (increasing ionic size)
C. `B lt C lt N lt O` (increasing first ionization enthalpy)
D. `I lt Br lt Cl lt F` (increasing electron gain enthalpy)

Answer

D