Option 1 states that only Bhatinda and Jamnagar have oil refineries. Option 2 states that only Mangalore has an oil refinery. Option 3 states that Jamnagar and Mangalore have oil refineries. Option 4 states that all three cities, Bhatinda, Jamnagar, and Mangalore, have oil refineries.

The correct option is option 4, as it includes all three cities. This means that all three cities, Bhatinda, Jamnagar, and Mangalore, have oil refineries.

It is important to note that if any option states that a city does not have an oil refinery and does not include the cities that do have oil refineries, then the answer would be incorrect. However, since option 4 includes all three cities, it is the correct answer in this case.

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