Which of the statements below is true about the following sentence?
Alaska was the forty-ninth state admitted to the United States, and Hawaii was the fiftieth.
A,The sentence contains a run-on. It should be corrected by replacing the comma with a period.
B?The sentence is a run-on. It should be corrected by deleting the word and.
C,The sentence is a run-on. It should be corrected by replacing the comma with a semicolon.
D,The sentence is correct as written.