Exhibit 99.15 MBNA MASTER CREDIT CARD TRUST II SERIES 1996-C KEY PERFORMANCE FACTORS September 30, 1997 Expected B Maturity 4/16/01 Blended Coupon 5.8327% Excess Protection Level 3 Month Average 4.66% September, 1997 4.83% August, 1997 4.60% July, 1997 4.56% Cash Yield 17.46% Investor Charge Offs 4.80% Base Rate 7.83% Over 35 Day Delinquency 4.84% Seller's Interest 12.31% Total Payment Rate 12.46% Total Principal Balance $30,549,822,447.26 Investor Participation Amount $500,000,000.00 Seller Participation Amount $3,759,687,928.77