多选题Which two are valid declarations within an interface definition？（）Avoid methoda（）；Bpublic double methoda（）；Cpublic final double methoda（）；Dstatic void methoda（double d1）；Eprotected void methoda（double d1）；
多选题
Which two are valid declarations within an interface definition？（）
A
void methoda（）；
B
public double methoda（）；
C
public final double methoda（）；
D
static void methoda（double d1）；
E
protected void methoda（double d1）；
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