Answer: By the time they came, we had finished our dinner.
Came is past tense, so I would assume it would be had finished
I would go with B. although because if you think and read. the sentence it make the most sense. hope this helps :)
I want to say Suspicion because with the limited amount of test subjects, She may doubt her conclusions as there were not enough data or subjects to give an accurate result.
<span>Art thou afeard / To be the same in thine own act and valour / As thou art in desire?</span>
