NEED AN ANSWER FAST, WILL MARK BRAINLIEST!!

Read this excerpt from a style manual.

Letters

Use a lowercase, italic letter to refer to the letter itself (e.g., You used an extra n in that word.)
Exception: Use a capital, non-italic letter to refer to a letter grade (e.g., My final grade was a B.)



Which revision of this sentence follows the style manual?

If no revision is necessary, select “No revision.”

I was not satisfied with the c that I earned in math.



A. I was not satisfied with the C that I earned in math.

B. No revision

C. I was not satisfied with the C that I earned in math.

D. I was not satisfied with the c that I earned in math.