WHICH_AMONG_THE_FOLLOWING_OPTION_IS_THE_FULL_SET_OF_CHARACTER_CLASS_HEXADECIMAL_DIGITS??$

• A. { 0 1 2 3 4 5 6 7 8 9 A B C D E F }
• B. { 0 1 2 3 4 5 6 7 8 9 a b c d e f }
• C. { 0 1 2 3 4 5 6 7 8 9 A B C D E F a b c d e f }
• D. { 0 1 2 3 4 5 6 7 8 9}