Identify the type of rhyme used in this excerpt from William Blake’s “The Chimney Sweeper.”

When my mother died I was very young,
And my father sold me while yet my tongue
Could scarcely cry ``'weep! 'weep! 'weep! 'weep!''
So your chimneys I sweep, & in soot I sleep.

A.
nonsense rhyme
B.
iambic rhyme
C.
end rhyme
D.
slant rhyme