单选题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？（）ALocale loc = Locale.getLocale（）； System.out.println（loc.getDisplayCountry（）+ + df.format（d））；BLocale loc = Locale.getDefault（）； System.out.println（loc.getDisplayCountry（）+ + df.format（d））；CLocale loc = Locale.getLocale（）；System.out.println（loc.getDisplayCountry（）+ + df.setDateFormat（d））；D Locale loc = Locale.getDefault（）；System.out.println（loc.getDisplayCountry（）+ + df.setDateFormat（d））；
单选题
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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