Read these lines of poetry:

Behind him lay the gray Azores,
Behind the Gates of Hercules;
Before him not the ghost of shores,
Before him only shoreless seas.
The good mate said: "Now must we pray,
For lo! the very stars are gone.
Brave Admiral, speak, what shall I say?"

Who is the "Brave Admiral" in these lines?

A.
George Washington

B.
Langston Hughes

C.
Christopher Columbus

D.
Abraham Lincoln