Why Does the Thought of Selling the Fish's Meat Disappoint

Why does the thought of selling the fish's meat disappoint the old man?

A) He knows people will cook the marlin, but it is best eaten raw.
B) Market prices are low, and Santiago will get only a fraction of what the fish is worth.
C) Because marlin has an unpleasant taste, Santiago wishes he caught something that made for better eating, like a shark.
D) The people who will eat the meat are unworthy. .