Read this sentence from paragraph 7.

Mackenzie knew that Amber had a reputation for being nice, but she was just so different than anyone Mackenzie had ever known before that Mackenzie was not sure about her.

Which TWO choices explain the meaning of this sentence?
A
Mackenzie did not believe that Amber was truly friendly.

B
Amber is known for being friendly.

C
Mackenzie thought Amber was a strange girl.

D
Mackenzie is not sure that she can trust Amber's reputation.

E
Amber was not nice to Mackenzie.

B. Amber is known for being friendly.

D. Mackenzie is not sure that she can trust Amber's reputation.