Read the poem and then answer the question: One night as I lay on the prairie
And looked at the stars in the sky,
I wondered if ever a cowboy
Would drift to that sweet Bye and Bye.
The trail to that bright mystic region
Is narrow and dim, so they say;
But the one that leads down to perdition
Is staked and is blazed all the way.
What is the rhyme scheme of the poem?
A. abac dedf
B. aabc ddef
C. abba cddc
D. abcb defe