The European Economic Community exported just under $400 billion in goods in 1988, sixty percent more than the United States did and nearly twice as much as Japan's exports.
(A) the United States did and nearly twice as much as Japan's exports
(B) the United States' and nearly double what the Japanese exports were
(C) the United States exported and nearly twice as much as the Japanese did
(D) what the United States did and nearly twice as much as Japan's exports
(E) what the United States exported and nearly double the Japanese exports

OA: C
Question: [spoiler]Why doesn't C require "what the United States exported?[/spoiler]