Which of the following is a reason why historians may want to consider opinions as well as facts reported by a source?

Incorrect answer

A.
A source that historians trust is likely to have true opinions.
Correct answer

B.
The opinions may provide clues to the source's feelings and possible bias.
Incorrect answer

C.
Examining opinions will reveal whether it is a primary or secondary source.
Incorrect answer (MY ANSWER)

D.
The opinions will reveal the identity of the source.

I got it wrong