What rhyme schemes are used in the poems “douglass” and “richard bone,” respectively?

a)the poems “douglass” and “richard bone” both follow an abbaabba rhyme scheme.
b)the poem “douglass” follows an abbaabba rhyme scheme, and the poem “richard bone” is composed in free verse.
c)the poem “douglass” follows an abcbabcb rhyme scheme, and the poem “richard bone” is composed in free verse.
d)the poems “douglass” and “richard bone” are both composed in free verse.