Exhibit 99.12 MBNA MASTER CREDIT CARD TRUST II SERIES 1996-C KEY PERFORMANCE FACTORS March 31, 2000 Expected B Maturity 4/16/01 Blended Coupon 6.1828% Excess Protection Level 3 Month Average 5.85% March, 2000 5.90% February, 2000 6.19% January, 2000 5.45% Cash Yield 19.39% Investor Charge Offs 4.70% Base Rate 8.80% Over 30 Day Delinquency 4.65% Seller's Interest 8.73% Total Payment Rate 15.20% Total Principal Balance $49,480,326,758.32 Investor Participation Amount $500,000,000.00 Seller Participation Amount $4,321,526,239.83