單項選擇題

Given:  
1.d is a valid, non-null Date object  
2.df is a valid, non-null DateFormat object set to the current locale   
What outputs the current locale’s country name and the appropriate version of d’s date?()

A.Locale loc = Locale.getLocale(); System.out.println(loc.getDisplayCountry()+ " " + df.format(d));
B.Locale loc = Locale.getDefault(); System.out.println(loc.getDisplayCountry()+ " " + df.format(d));
C.Locale loc = Locale.getLocale();System.out.println(loc.getDisplayCountry()+ " " + df.setDateFormat(d));
D. Locale loc = Locale.getDefault();System.out.println(loc.getDisplayCountry()+ " " + df.setDateFormat(d));

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