Exhibit 99.1 MBNA MASTER CREDIT CARD TRUST II SERIES 1994-C KEY PERFORMANCE FACTORS December 31, 1999 Expected B Maturity 11/15/01 Blended Coupon 6.7347% Excess Protection Level 3 Month Average 5.43% December, 1999 4.47% November, 1999 5.77% October, 1999 6.07% Cash Yield 19.14% Investor Charge Offs 5.04% Base Rate 9.63% Over 30 Day Delinquency 4.63% Seller's Interest 11.35% Total Payment Rate 14.35% Total Principal Balance $ 49,947,826,881.37 Investor Participation Amount $ 1,000,000,000.00 Seller Participation Amount $ 5,671,007,362.88