why wAs it possiBlE For thEsE AnCiEnt trEEs lEt morE light through thAn moDErn onEs
A．BECAusE thEy wErE ClosEly spACED, only 3 to 16 FEEt ApArt.
B．BECAusE thEy wErE smAllEr plAnts AnD shruBs.
C．BECAusE thEir BrAnChEs DiD not FAn out As FAr As to Form A shApE likE umBrEllA.
D．BECAusE thEy hAD vEry smAll lEAvEs likE thAt oF FErn AnD DroppED EAsily.