The correct answer is letter D.
The works of Freud and Jung oppose each other in so far as the phenomenology of psychic events develops in so doing under a certain aspect which generally does not exclude the other but complements it.
The problem is that some recognized this complementary in the other's work. His personal relationship was very close, to the extent that Freud felt Jung for 7 years as his direct collaborator and heir prince, and Jung worshiped in Freud the spiritual father he did not have.