If you're sipping your lunch, you probably have an iPhone. If you're enjoying pizza from Little Caesars, you're probably on Android. Consumer choices have always been about picking this or that, and the current either/or decision is between smartphone operating systems. Your choice when it comes to operating systems says a lot about you, including what you like to eat, according to data provided to CNBC by NPD Group's Checkout Tracking. IPhone users were much more likely to go for a liquid lunch, with soup and smoothies taking the top spots for iOS choices. Soup had an iPhone-to-Android index of...