Exhibit 99.1 MBNA MASTER CREDIT CARD TRUST II SERIES 1994-C KEY PERFORMANCE FACTORS May 31, 2001 Expected B Maturity 11/15/01 Blended Coupon 4.4199% Excess Protection Level 3 Month Average 7.71% May, 2001 7.64% April, 2001 7.52% March, 2001 7.99% Cash Yield 19.67% Investor Charge Offs 5.45% Base Rate 6.57% Over 30 Day Delinquency 4.84% Seller's Interest 8.52% Total Payment Rate 14.20% Total Principal Balance $ 58,203,705,030.43 Investor Participation Amount $ 1,000,000,000.00 Seller Participation Amount $ 4,958,014,468.94