Q:Read the article and select the best answer. Article: Each year on the first Saturday in March, a group of middle-aged men and a few women gather at sunrise on a beach near prefix = st1 /St. Petersburg,Fla.Above the high-water line are more than 50 small boats. At exactly 7 a.m., Steve Isaac stands at the water's edge with his arm raised and yells: "Go!" Most of the boats are part of the Everglades Challenge. They head for a finish line many days and 300 miles to the south, at Key Largo. But this Saturday, for the first time, 10 of the brave mariners--including a journalist, whose progress will be available online--will compete in the world's toughest small boat race, called the Ultimate Florida Challenge. Instead of finishing at Key Largo, the 10 boaters will continue around the state, heading north past Miami, the Kennedy Space Center, and Jacksonville, then down the Suwannee River, eventually passing most of Florida before arriving back at the beach near St. Petersburg. It will be 1,200 miles of head winds and burning sun. But it will also take the challengers through some of the most impressive scenery in North America. The rules are no-nonsense: First one back to the beach wins. The voyage must be completed within a month. Human power or sails, only. No motors. No rides in cars or tows from power boats. No help from family or friends. And at least once a day, participants are required to acknowledge by cell phone or radio that they are still alive. The race will be a replay of the tale of the tortoise and the rabbit. The trick, if there is one, is to be a tortoise and just keep moving forward. But the one-month deadline means that being too much of a tortoise may result in failure. So challengers have to be a little bit of a rabbit, as well. Question: This 1,200-mile race is unusual because _ . Options: A: more people will take part B: only men will take part C: its rules are meaningless D: it will be more challenging
A:
D