As pArt oF thE AnnuAl hEAlth sCrEEning, thE nursE visits thE Eighth-grADE physiCAl EDuCAtion ClAssEs AnD Asks EACh stuDEnt to BEnD ForwArD At thE wAist with thE BACk pArAllEl to thE Floor AnD thE hAnDs togEthEr At miDlinE. For whiCh oF thE Following is thE nursE AssEssing
A、slippED Epiphysis.
B、DEvElopmEntAl DysplAsiA oF hip.
C、iDiopAthiC sColiosis.
D、physiCAl DExtErity.