Let PPP be the set of all prime factors of the number 909090. Write PPP in roster form.
{2,3,5}\{2, 3, 5\}{2,3,5}
{1,2,3,5}\{1, 2, 3, 5\}{1,2,3,5}
{2,3,5,9,10}\{2, 3, 5, 9, 10\}{2,3,5,9,10}
{3,5}\{3, 5\}{3,5}