Why does the length of credit history matter, and what factors contribute to a longer effective history?

• A. Longer history provides more data on behavior; factors include age of oldest account, average age of accounts, and consistency of use.
• B. Length only matters for mortgage loans; factors include number of inquiries and average balance.
• C. Length is irrelevant if score is high; factors include credit limit size only.
• D. Length matters only if you have no income; factors include employment status.

Answer: (A)