The HCF of 2472, 1284 and a third number 'N' is 12. If their LCM is 23 × 32 × 5 × 103 × 107, then the number 'N' is:

• A. 2 × 32 × 7
• B. 2 × 33 × 10
• C. 2 × 32 × 5
• D. one of these