The set of all perfect number and twin primes among the number 2, 3, 4, 5, 6, 7, 8, 9, 10 is
1
1, 3, 5, 6, 7
2
3, 5, 6, 7
3
1, 3, 5, 6, 7, 9
4
1, 3, 5, 6, 7,8
The set of all perfect number and twin primes among the number 2, 3, 4, 5, 6, 7, 8, 9, 10 is