Which of the following statements about "const" is incorrect?

A、Objects,datamembers,andmemberfunctionscanbedefinedwithconst;
B、Theconstantobjectcanonlycalltheconstantmemberfunctionsofaclass;
C、Constantdatamemberscanonlybeinitializedbytheconstructorthroughtheinitializationlist.;
D、Constantmemberfunctionscancallnon-constantmemberfunctionsoftheclass