单项选择题

A.-Ala-Ile-Asn-Met-Val-Gln
B.-Thr-Trp-Val-Glu-Ala-Asn
C.-Asn-Pro-Ala-Met-Tyr-Gln
D.-His-Trp-Cys-Met-Gln-Ala
E.-Lys-Ser-Phe-Ala-Gln-Val