D to get home
I believe get is an adverb
B, contributes to the lines dramatic effect.
Coordinating conjunctions bring two clauses (subject + verb + object) together. When joining two ideas, the comma is used.
Brutus claims to be an honorable man, but he stabbed Caesar.
Contrast conjunctions introduce a contradiction with what is said before (Brutus is honorable or honest, but he is a killer).