Which statement is true regarding servant leadership?

Question $10$ options:

a$)$

It is one of the only leadership approaches concerned with one$-$on$-$one relationships.

b$)$

It is one of the only leadership approaches concerned with organizational outcomes.

c$)$

It is one of the only leadership approaches concerned with leader attributes and behaviors.

d$)$

It is one of the only leadership approaches concerned with social justice and inequalities.