Exhibit 99.28 MBNA MASTER CREDIT CARD TRUST II SERIES 1998-C KEY PERFORMANCE FACTORS August 31, 2000 Expected B Maturity 6/16/03 Blended Coupon 6.6853% Excess Protection Level 3 Month Average 5.64% August, 2000 5.71% July, 2000 6.16% June, 2000 5.06% Cash Yield19.12% Investor Charge Offs 4.51% Base Rate 8.89% Over 30 Day Delinquency 4.84% Seller's Interest10.94% Total Payment Rate14.32% Total Principal Balance$55,220,806,818.68 Investor Participation Amount$750,000,000.00 Seller Participation Amount$6,039,606,300.19