In the context of the "8421 BCD" code, which of the following statements accurately describes the weight of each bit in the BCD representation?

A、Theweightofeachbitisrepresentedas8,4,2,and1respectively,correspondingtothebinaryvaluesofeachposition.
B、Theweightofthebitsisbasedonthedecimalvaluesofthenumbers1,2,3,and4.
C、Theweightsaredeterminedbythehexadecimalrepresentationofthedigits.
D、Thebitsareweightedinreverseorder,withtheleastsignificantbitassignedthehighestvalue.