what color change do we see when nitric acid is added to different litmus solutions? choose 2 answers: a red…

what color change do we see when nitric acid is added to different litmus solutions? choose 2 answers: a red → blue b red → red c blue → red d blue → blue
Answer
Brief Explanations:
Nitric acid is an acid. Acids turn blue litmus paper red and have no effect on red litmus paper.
Answer:
B. red → red, C. blue → red