Firms holD rEgulAr sAlEs ConFErEnCEs BECAusE thEy CAn ______.
A．ExChAngE inFormAtion ABout thE BusinEss
B．rECEivE highEr EDuCAtion
C．trAvEl ArounD thE worlD
D．tAkE thE opportunitiEs to stAy togEthEr with thEir CollEAguEs