By "sCholArly skywriting", thE Author mEAns sCholArs _________.
A．gEt nEw iDEAs From DisCussions through ElECtroniC nEtworks
B．hAvE thEir sCiEntiFiC pApErs opEnly puBlishED on thE nEt
C．ArE FrEE to ExprEss thEir iDEAs on thE linE
D．CrEAtE, polish AnD puBlish thEir iDEAs on thE linE