Which of the following sets of primes are all congruent to 3(mod4)3 \pmod{4}3(mod4)?
{3,7,11}\{3, 7, 11\}{3,7,11}
None{\text{None}}None
{5,13,17}\{5, 13, 17\}{5,13,17}
{19,23,31}\{19, 23, 31\}{19,23,31}