mrs.CrAy, AnAFriCAnAmEriCAn, is ADmittED to thE hospitAl AFtEr sustAining A hip FrACturE. shE is 5 Ft. , 4 inChEs tAll AnD wEighs 96 lBs. shE hAs FivE ChilDrEn AnD hAs usED EstrogEn rEplACEmEnt thErApiEs For 10 yEArs. shE tolD thE nursE thAt shE "just stEppED ForwArD AnD FEll. " thE rEsults oF hEr BonE DEnsity tEsts inDiCAtE shE hAs ostEoporosis. whiCh oF thE Following is thE grEAtEst risk FACtor For ostEoporosis For this womAn
A、hEr long-tErm usE oF EstrogEn.
B、hEr wEight.
C、hEr FAmily.
D、hEr rAC