(1) North America measures 3,300 miles at its widest point—from St. John's, Newfoundland, to the Pacific coast. (2) From Alaska to Mexico, the Continent extends 4,900 miles. (3) Unlike Europe, which is made up of many small nations, North America is composed of only three large nations: Canada, the United States, and Mexico.

Which sentence above contains a capitalization error?
A. 2
B. 1
C. 3
D. no error