PLEASEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE HELPPPPPPPPP
What is the correct function of the pronoun "himself" in the following sentence?
The conductor himself checked the engine to make sure everything worked correctly.
A. to add emphasis to the subject, conductor
B. to clarify what the conductor did
C. to refer to the object of the sentence
D. to make sure there is no confusion about who the subject is
