ACCorDing to thE Author, thErE wAs onCE A trEnD in thE u. s. ______.
A．For miDDlE ClAss young ADults to stAy with thEir pArEnts
B．For young ADults to lEAvE thEir pArEnts AnD livE inDEpEnDEntly
C．For mArriED young ADults to movE BACk homE AFtEr A lEngthy ABsEnCE
D．For young ADults to gEt joBs nEArBy in orDEr to livE with thEir pArEnts