Manas enter in his home, mother was cooking food, suddenly he realise that some smell is there from kitchen, without wasting a minute he went to kitchen and knob down the cylender and open all the windows. By which chemical he was able to realise the LPG smell.

• A. Methyle mercepton
• B. Ethyle mercepton
• C. Both [a] and [b]
• D. Neither [a] nor [b]