CTET Class I to V 2015 Feb Paper

Study the following table :After studying the above table, Devmeet a class V student, wrote the following in his notebook : 1. Petrol is a more expensive fuel than diesel. 2. The percentage increase in price of diesel is more than that of petrol. 3. Diesel is cheaper and that is why public transport runs on it. 4. Diesel is a cheaper fuel than petrol. People should buy diesel vehicle. Which one of the following is correct?