In each of the following questions, three sentences are given, each employing a specified idiom or phrase highlighted in bold. Identify the sentence(s) in which the idiom/phrase has been used correctly in terms of meaning and context. Choose the option that best reflects the correct sentence(s). If none of the sentences use the idiom correctly, choose Option E (None is correct).
I. Did the central bank officials burn the midnight oil to finalize the new credit guidelines before the market opened?  
II. Researchers studying lunar soil samples were forced to burn the midnight oil after radiation destroyed their primary sensors.  
III. If municipal teams burn the midnight oil during monsoon clearance drives, drain blockages can be systematically reduced.