CrEDitCArD shiElD isA．An insurAnCE CompAny whiCh DEAls with CArD thEF
B．A systEm For rEgistEring pEoplE’s CArD DEtAil
C．An EmErgEnCy tElEphonE AnswEring sErviC
D．An AgEnCy For FinDing lost or stolEn CArD