What is the difference between 7490 and a 7492?

• A. 7490 is a MOD-12, 7492 is a MOD-10
• B. 7490 is a MOD-12, 7492 is a MOD-16
• C. 7490 is a MOD-16, 7492 is a MOD-10
• D. 7490 is a MOD-10, 7492 is a MOD-12