BAsiC rEsEArCh is vitAl BECAusE ______.
A．it lEADs to rEsults thAt CAn BE ApprECiAtED
B．it proviDEs thE BAsis For sCiEntiFiC progrEss
C．it is DrivEn out By AppliED rEsEArCh
D．its rEsults CAnnot BE AntiCipAtED