An EnginEEr DEsignED A BAll so thAt whEn it wAs DroppED, it rosE with EACh BounCE ExACtly onE-hAlF As high As it hAD FAllEn. thE EnginEEr DroppED thE BAll From A 16-mEtEr plAtForm AnD CAught it AFtEr it hAD trAvElED 46.5 mEtErs. how mAny timEs DiD thE BAll BounCE
A、5
B、6
C、7
D、8
E、9