Choose the sentence that would make the most effective thesis statement.
• San Francisco and San Diego are both cities in California that have many differences but also share many similarities, which are important to know if you want to move to one of these places.
• While San Francisco and San Diego are among the most populated and expensive cities in California, the public transit system, the culture, and political climate are quite different in each city.
• San Francisco and San Diego are both cities in California that are very attractive and expensive places to live in the entire U.S.