In his poem "For a Lady I Know," Countee Cullen depicts the clash between the upper and lower classes of society. The poem is assumed to be about upper-class white Americans who treat African Americans poorly. He points out the audacity of the upper class to presume that African Americans would continue to wait on them forever, even after death:
She even thinks that up in heaven
Her class lies late and snores
While poor black cherubs rise at seven
To do celestial chores.
This poem suggests that white Americans don’t want to help improve the lifestyle of poor African Americans but are comfortable with the minority races serving them forever.
To vary the sentence structure i would use "B. Have you noticed how hard she works?" as an answer. This is because the construction of A is the same as of the third sentence; C is the same; and D is similar to sentence one, based on the structure.