In 2008, a Little More Than 50 Percent of Live

In 2008, a little more than 50 percent of live births in the United States were male, the remainder designated as female. Recent medical studies suggest that of all live births, many individuals do not fit neatly into either biological category. What is the current estimate of the percentage of such births?

A) at least 5 percent
B) almost 7 percent
C) almost 2 percent
D) less than 1 percent