Exhibit 99.30 MBNA MASTER CREDIT CARD TRUST II SERIES 1998-C KEY PERFORMANCE FACTORS March 31, 2000 Expected B Maturity 6/16/03 Blended Coupon 6.1165% Excess Protection Level 3 Month Average 5.90% March, 2000 6.02% February, 2000 6.23% January, 2000 5.46% Cash Yield19.39% Investor Charge Offs 4.70% Base Rate 8.68% Over 30 Day Delinquency 4.65% Seller's Interest 8.73% Total Payment Rate15.20% Total Principal Balance$49,480,326,758.32 Investor Participation Amount$750,000,000.00 Seller Participation Amount$4,321,526,239.83