Most expensive street legal car available on the market today

The Bugatti Veyron 16.4 was the most expensive street-legal car during its production years, priced around $1.5-2 million. While the Lamborghini Reventon was also very expensive, the Veyron held the title of the most expensive production car. The question asks about availability 'today' but in the context of when these questions were likely written, Veyron was the correct answer. The claimed answer A is correct.