whEn using mArgin to invEst in EquitiEs, whiCh oF thE Following DEFinEs initiAl mArgin AnD whAt lEvEl will thE mArgin BE Brought BACk to in thE EvEnt oF A mArgin CAllinitiAl mArginmArgin CAll ACtion ①
A、Amount oF BorrowED FunDs in thE trAnsACtions A DEposit must BE mADE to Bring thE mArgin BACk to thE initiAl mArgin ②
B、Amount oF BorrowED FunDs in thE trAnsACtions A DEposit must BE mADE to Bring thE mArgin BACk to thE mAintEnAnCE mArgin ③
C、minimum Amount oF Equity rEquirED oF thE invEstor A DEposit must BE mADE to Bring thE mArgin BACk to thE mAintEnAnCE mArgin
A、

A、①

B、

B、②

C、

C、③