how Do AmEriCAns shortEn thEir long nAmEs
A．thEy usE thE First lEttErs oF thE worDs instEAD oF sAying EACh worD.
B．thEy ArE tolD how to shortEn thEm By AuthoritiEs.
C．thEy shortEn long nAmEs As thEy likE.
D．not mEntionED in thE ArtiCl