Sameer has to make a telephone call to his friend Harish. Unfortunately he does not remember the 7 – digit phone number. But he remembers the first 3 digits are 635 or 674, the number is odd and there is exactly one 9 in the number. The minimum number of trials that Sameer has to make to be successful is?

• A. 10,000
• B. 2430
• C. 3200
• D. 5000