Unlike Hydrogen, Which Is Often Abstracted from Substrates as H⁺

Multiple Choice

Unlike hydrogen, which is often abstracted from substrates as H⁺, electronegative ____ cannot be readily eliminated as ____, thus enzyme inhibitors can be fashioned in which ____ replaces H at positions where catalysis involves H-removal as H⁺.

A) sodium; Na⁺; Na
B) potassium; K⁺; K
C) deuterium; D⁺; D
D) fluorine; F⁺; F
E) all are true