Mathematics · Averages and Percentages

In State X, Mr. Camp's eighth-grade class of 26 students was surveyed, and 34.6% of the students reported having at least two siblings. The average eighth-grade class size in the state is 26. If Mr. Camp's class is representative of the state's eighth-grade classes and there are 1,800 eighth-grade classes in the state, which of the following best estimates the number of eighth-grade students in the state who have fewer than two siblings?