Answer:
i think the answer is B cause I've had this question before
The first playwright to use the plot of a man searching for the culprit of a terrible crime, only to discover he is searching for himself was Sophocles and the play was Oedipus. He does not know that the man he was trying to hunt, a man who had killed his father and married his own mother, was himself. He had been set aside from his parents at a very early age, so he knew none of them. That is why he could not have known that the man he had killed was his father and that the woman he married to was his mother.
"It is a gold coin dropped
down a drain in Heaven"
The comparison means that it's sort of like a golden coin that someone had dropped down a sink drain on an accident, but someone dropped it down the drain in heaven and it has now landed in the sky of the Earth.
I think the author chose to make this comparison because the sun is yellow and it is sort of a golden color and it is sort of common for things to be dropped down the drain. Therefore, it is like a golden coin going down the drain of heaven and into the sky.