with thE intEntion oF AttrACting A somEwhAt DiFFErEnt typE oF pAssEngErs, thE AirlinEs hAvE now BEgun to ConCEntrAtE on ______.
A．proviDing FACilitiEs EnABling BusinEss trAvElErs to work on BoArD
B．Ensuring thAt thE FACilitiEs oFFErED to thE ExECutivE ArE inDEED supErior
C．orgAnizing ACtivitiEs in whiCh First-ClAss pAssEngErs CAn pArtiCipAtE
D．instAlling slEEping CompArtmEnts whErE morE privACy is EnsurED