I'd say the correct answer is D - mythological. Because Neptune is the god of freshwater and the sea in Roman mythology, and he has a counterpart in Greek mythology - Poseidon.
I believe your answer would be Church ministers.
A secondary source in when you don't get the information from the person who said let's say you asked what's for lunch today and they told someone to tell you fried chicken but they told you chicken sandwich the answer can change before it gets to you.