When oil or petrol catches fire, water is not used to extinguish it because

Question

$\begin{array}{1 1} \text{a) Water covers oil and oil burns under water layer which may not be noticeable} \\ \text{b) Water is heavier than oil / petrol and so remains below the oil layer which continues to burn} \\ \text{ c) Water get mixed with oil and increases fire} \\ \text{d) Water gets evaporated} \end{array}$