How many different positive integers exist between 10^4 and 10^5, the sum of whose digits is equal to 2?	Choose the correct choice from the following choices:
A) 3
B) 4
C) 5
D) 6
E) 7
10001   10010   10100   11000   20000   TOTAL NO. =5   5
<result>C</result>
How many different positive integers exist between 10^4 and 10^5, the sum of whose digits is equal to 2?