Question

It's my last question PLEASE HELP I'LL FAN AND MEDAL. PLEASE PLEASE PLEASE PLEASE HELP

Read this excerpt from “O Captain! My Captain!” by Walt Whitman. What is the rhyme scheme?

O Captain! my Captain! our fearful trip is done,
The ship has weather'd every rack, the prize we sought is won,
The port is near, the bells I hear, the people all exulting,
While follow eyes the steady keel, the vessel grim and daring;
But O heart! heart! heart!
O the bleeding drops of red,
Where on the deck my Captain lies,
Fallen cold and dead.

A:ababcced

B:ababcdde

C:aabbcded

D:aabbddee