Why Should the Chirality of an Ammonium Salt with Four

Multiple Choice

Why should the chirality of an ammonium salt with four different groups on the nitrogen atom not be ignored?

A) Because there is rapid interconversion between the two isomeric forms at room temperature
B) Because interconversion cannot occur between the two isomeric forms at room temperature
C) Because the compound would be a meso compound
D) Because the compound would be a racemic mixture