Nitroso amines (R2N‚Äö√Ñ√∂‚à ö‚Ć‚à ö‚â†N=O) are soluble in water. On heating them with concentrated H2SO4 they give secondary amines. What is this reaction called as?$

• A. Perkin’s reaction
• B. Fittig’s reaction
• C. Sandmeyer’s reaction
• D. Liebermann’s nitroso reaction