with raspberries, too, there is always something going on: a more recent late variety, which ripens well into september and has a fantastic aroma and extremely attractive, firm fruit which keep well, is 'polka'.

How would the previous sentence be correctly capitalized?
With raspberries, too, there is always something going on: A more recent late variety, which ripens well into September and has a fantastic aroma and extremely attractive, firm fruit which keep well, is 'Polka'.