The number of foreign international air travelers arriving in the United States are projected to rise above 40 million in the next 4 years. At the same time, direct spending by these visitors will rise by an estimated $40 billion. A) change to The number of foreign international air travelers arriving to the United States are projected to rise above 40 million in the next 4 years. B) change to The numbers of foreign international air travelers arriving in the United States are projected to rise above 40 million in the next 4 years. C) change to The number of foreign international air travelers arriving in the United States is projected to rise above 40 million in the next 4 years. D) no correction is necessary