How many different positive integers exist between 106 and 107, the sum of whose digits is equal to 2?

How many different positive integers exist between 10^6 and 10^7, the sum of whose digits is equal to 2?

A. 8
B. 5
C. 7
D. 6

How many different positive integers exist between 10^6 and 10^7, the sum of whose digits is equal to 2?

Answer: The correct option C