Which of the following is TRUE regarding index of hydrogen deficiency (IHD) ?
A) When calculating IHD, oxygen does not change the number of H atoms in the parent formula, halogens are considered equal to hydrogen, and nitrogen requires one additional hydrogen atom in the parent formula.
B) When calculating IHD, oxygen requires one additional hydrogen atom in the parent formula, halogens are considered equal to hydrogen, and nitrogen does not change the number of H atoms in the parent formula.
C) When calculating IHD, oxygen is treated like hydrogen, halogens require one additional hydrogen atom in the parent formula, and nitrogen does not change the number of H atoms in the parent formula.
D) When calculating IHD, oxygen does not change the number of H atoms in the parent formula, halogens are considered equal to hydrogen, and nitrogen requires two additional hydrogen atoms in the parent formula.
E) When calculating IHD, oxygen and halogens do not change the number of H atoms in the parent formula, and nitrogen requires two additional hydrogen atoms in the parent formula.
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