Which of the following alternatives to the underlined portion would be LEAST acceptable in terms of the context of this sentence?

A. NO CHANGE
B. On November 1, 1957, the Mackinac Bridge opened, in spite of decades of problems, to traffic.
C. The Mackinac Bridge opened to traffic, in spite of decades of problems, on November 1, 1957.
D. In spite of decades of problems, the Mackinac Bridge opened to traffic on November 1, 1957.