AFtEr DEtErmining thAt A prEgnAnt CliEnt is rh-nEgAtivE, thE physiCiAn orDErs An inDirECtCoomBs’tEst. whAt’s thE purposE oF pErForming this tEst on A prEgnAnt CliEnt A、to DEtErminE thE FEtAl BlooD rh FACtor. B、to DEtErminE thE mAtErnAl BlooD rh FACtor. C、to DEtECt mAtErnAl AntiBoDiEs AgAinst FEtAl rh-positivE FACtor. D、to DEtECt mAtErnAl AntiBoDiEs AgAinst FEtAl rh-nEgAtivE FACtor.