Fred, a human resource manager, works for SuperVix Inc. Initially, he was responsible only for recruitment. After a promotion, he was made responsible exclusively for employee benefits. Which of the following is true of Fred?

a$.$

Both the roles that Fred played were generalist roles.

b$.$

Both the roles that Fred played were specialist roles.

c$.$

Fred moved from a specialist role to a generalist role.

d$.$

Fred moved from a generalist role to a specialist role.