Read the article and select the best answer. Article: Mobile phone technology is developing rapidly. What will the future mobile be able to do and what will it look like? Take a look at the following mobile phones, and you'll find that some amazing phones are now coming our way. Packet The packet has five touch screens with different usages . When folded, the Packet is in a simple square shape. You can see the time and any messages you've received. Once you open it, the five screens will _ . Cob alto It has taken only two years for touch screen mobile phones to be used worldwide. Why not the 3D phones then? With an almost all-glass design, the Cobalto phone can make Google Maps even more useful, as shown here. Human-body Phone We often save photos of someone we love. When we miss them, we can see the photos. And now, Japanese scientists' human-body phone is more than just photos. With a human body shape, it's coated with a material just like human skin. When you're holding the phone, it feels as if you're holding someone you miss. Paper Phone How many times have you wanted to smash your phone when talking to annoying people? With the Paper Phone, you'll soon be able to do it. As the world's first flexible mobile phone, it can be bent freely while you're making calls, reading e-books and playing music. Question: What's the best title for the passage? Options: A: The importance of Mobile Phones B: The future of Mobile Phones C: The changes of Mobile Phones D: The difference of Mobile Phones
B