Option C – 11.00pm
15° = 1 hour, therefore, 75°W = 5 hours, and also, 15°E = 1 hour
Therefore, 75°W + 15°E (5 hours + 1 hour) = 6 hours.
For the time in Nigeria when the time in New York is 5:00pm
5:00pm+6 hours = 11:00 pm