Answer:5. only A and B(precise control over the number of digits to be displayed and control over the presence of a leading zero)
Explanation: DECIMAL FORMAT CLASS is a subclass of Number format class specifically made to format parsing decimal Numbers. It is capable of formating both ARABIC, WESTERN AND INDIC DIGITS. It has a unique Attribute of control over the number of digits to be displayed and control over the presence of a leading zero.
NUMBER FORMAT CLASS is the class for formatting parsing numbers it helps to format According to Specific locale.