Well notable has two meanings one being An important or famous person and the other being worthy of attention.
The answer to the question would be B. They were enemies in the beginning. Hope this helps!
Inperative Form - Are you a fool?
The grocer didn't notice the thieves enter until it was too late.
If you were playing the piano how did the vase get broken.
The police force still had no idea how they were going to enter the strange cottage without being seen.