Which of the following is an example of an infinite set?
The set of all prime numbers
The set of digits {0,1,2,3,4,5,6,7,8,9}\{0, 1, 2, 3, 4, 5, 6, 7, 8, 9\}{0,1,2,3,4,5,6,7,8,9}
The set of days in a week
The set of vowels in the English alphabet