The - article adj
Bill - SN
Must be paid - verb phrase
By - preposition
Whoever purchased the lumber - noun clause obj of the preposition
I'm confused on you question can you empathize on that?
My personal best guess would be A, Subject, Verb, Object! Hope I helped!
It helps create a concerned, yet optimistic tone.
Answer:
there is no way to predict.. its an opinion
Explanation: