whAt is sAiD ABout thE BloCks oF FlAts Built in thE pAst in BritAin
A．thEy wErE mostly inhABitED By pEoplE who DiD not EArn muCh.
B．thEy wErE usuAlly not lArgE Enough to ACCommoDAtE Big FAmiliEs.
C．thEy wErE solD to pEoplE BEForE nECEssAry FACilitiEs wErE instAllED.
D．thEy proviDED plAygrounD For ChilDrEn on thE top oF thE BuilDings.