What Is the Biggest Disadvantage of Internal Recruiting

What is the biggest disadvantage of internal recruiting?

A) The possibility of creating or perpetuating a strong resistance to change or the stifling of creativity and innovation
B) The pool of applicants is significantly smaller
C) An external candidate may have better qualifications for the job opening
D) Internal employees may feel that they are entitled to the job whether or not they are qualified and capable
E) An internal candidate may not have the same desire to perform as an external candidate