Pick out the wrong statement pertaining to nitric acid ?

A. Yellow color of impure nitric acid is because of dissolved oxides of nitrogen (mainly NO2)

B. About 90% of nitric acid is manufactured by Ostwalds process

C. It is a strong mono basic acid which reacts with almost all the metals except noble metals

D. Arc process of nitric acid manufacture is economical as compared to Ostwalds process

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