Andrew is _____ than his students.
Andrew is _____ than his students.

A.more an experienced teacher
B.a more experienced teacher
C.an experienced more teacher
D.a teacher more experienced

Are B&D both correct? Which one is more commonly used?
Thx:)

Question

Andrew is _____ than his students.
Andrew is _____ than his students.

A.more an experienced teacher
B.a more experienced teacher
C.an experienced more teacher
D.a teacher more experienced

Are B&D both correct? Which one is more commonly used?
Thx:)

Answer

B is correct. 
D is a somewhat archaic and unusual form. 
A and C are incorrect.