Sentence Correction (SC) | Re: In the late 1880s, the journalist Jacob Riis visited tenement dwelling

Please review my understanding below:

in A] are these absolute phrases : ''their floors often serving as beds, and their walls often windowless and dilapidated with age and neglect''

In C] had there been a semicolon before 'their' floors often serving...?
Would D] be correct then?


in D] I tweek the option below: Is it correct now? Is the usage of 'having' fine here? when do we say ''having' as ing verbal is wrong?

'',having interiors inhumanely overcrowded, floors often serving for beds, and
...

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