Exhibit 99.15 MBNA MASTER CREDIT CARD TRUST II SERIES 1996-C KEY PERFORMANCE FACTORS June 30, 1997 Expected B Maturity 4/16/01 Blended Coupon 5.8656% Excess Protection Level 3 Month Average 4.40% June, 1997 4.90% May, 1997 4.49% April, 1997 3.81% Cash Yield 17.16% Investor Charge Offs 4.60% Base Rate 7.67% Over 35 Day Delinquency 4.57% Seller's Interest 10.08% Total Payment Rate 12.14% Total Principal Balance $27,184,721,330.37 Investor Participation Amount $500,000,000.00 Seller Participation Amount $2,741,483,811.88