Reaction of a polypeptide with carboxypeptidase A releases Met. The polypeptide undergoes partial hydrolysis to give the following peptides. What is the sequence of the polypeptide?
a. Ser, Lys, Trp
b. Gly, His, Ala
c. Glu, Val, Ser
d. Leu, Glu, Ser
e. Met, Ala, Gly
f. Ser, Lys, Val
g. Glu, His
h. Leu, Lys, Trp
i. Lys, Ser
j. Glu, His, Val
k. Trp, Leu, Glu
l. Ala, Met