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多項選擇題

Given:  
12. NumberFormat nf = NumberFormat.getInstance();  
13. nf.setMaximumFractionDigits(4);  
14. nf.setMinimumFractionDigits(2);  
15. String a = nf.format(3.1415926);  
16. String b = nf.format(2);  
Which two statements are true about the result if the default locale is Locale.US?()

A. The value of b is 2.00.
B. The value of a is 3.141.
C. The value of a is 3.14.
D. The value of b is 2.0000.
E. The value of a is 3.1415.
F. The value of a is 3.1416.
G. The value of b is 2.

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