Which of the following is not a long day plant?

Plants are classified based on the requirement of daylight for their proper growth and development i.e. long day plants and short day plants. The plants which require more than twelve hours of daylight are termed as long day plants. Whereas the plants which need less than 8 hours of daylight are short-day plants.
Out of the given options Lobia, pea and berseem are long day plants, whereas oat is a short day plant.