Which of the following is punctuated correctly?
the small airplane had a smooth flight: however, a sudden gust of wind made its landing a little rough.
the small airplane had a smooth flight, however, a sudden gust of wind made its landing a little rough.
the small airplane had a smooth flight; however, a sudden gust of wind made its landing a little rough.
the small airplane had a smooth flight however, a sudden gust of wind made its landing a little rough.