What Was the Main Problem That Plagued the Transition of Lyndon

What was the main problem that plagued the transition of Lyndon Johnson?

A) He was taking leadership of an administration filled with his partisan loyalists.
B) He was taking the reins of an administration that had lingering hostilities from the last election.
C) He was taking control over an executive branch to which he was closely connected.
D) He was taking over an administration from which he had been largely excluded.