Exhibit 99.11 MBNA MASTER CREDIT CARD TRUST II SERIES 1996-B KEY PERFORMANCE FACTORS April 30, 2000 Expected B Maturity 4/17/06 Blended Coupon 6.4352% Excess Protection Level 3 Month Average 5.73% April, 2000 5.37% March, 2000 5.76% February, 2000 6.07% Cash Yield 18.08% Investor Charge Offs 4.70% Base Rate 8.01% Over 30 Day Delinquency 4.72% Seller's Interest 10.74% Total Payment Rate 13.82% Total Principal Balance $52,271,464,953.72 Investor Participation Amount $500,000,000.00 Seller Participation Amount $5,612,664,435.23