49, 58, 67, 76, 85 
In numbers 30 to 90, there are some two-digit numbers in which the sum of the tens digit and the ones digit is 13. How many of such numbers are there?~\uline{~~~~~~~~~~}~ 
Options:
1: $$10$$ 
2: $$6$$ 
3: $$8$$ 
4: $$5$$ 