问题

Lily, are you ________ than Lucy — I guess so. But I’m smarter than Lucy, and I’m ________ of the two.
A:more serious; quieter
B:seriouser; quieter
C:more serious; the quieter
D:seriouser; the quieter;
B:seriouser; quieter
C:more serious; the quieter
D:seriouser; the quieter;
正确答案是: