单选题
阅读下述代码，请问修改data的value成员以存储3.14，正确的方式是（ ）。
union Data{
int num;
float value;
char symbol;
};
union Data data;
A.
datvalue = https://tiku.scratchor.com/paper/question_answer/3.14;
B.
value.data = https://tiku.scratchor.com/paper/question_answer/3.14;
C.
data->value = https://tiku.scratchor.com/paper/question_answer/3.14;
D.
value->data = https://tiku.scratchor.com/paper/question_answer/3.14;
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