A: ... B: ... Two salesmen promote their smartphones.

The first salesman said that my mobile phone can be used for one year if it is charged for ten minutes. The second salesman said that my mobile phone is charged by solar energy, vibrated and never turned off. The first salesman said that my mobile phone was anti-theft. After the thief stole it, he couldn't take off the battery and turn it off. And he will automatically take off the thief's head and send it to you, and accurately calculate the thief's position. The second salesman said that it can't compare with my mobile phone. If a thief steals my mobile phone and enters the unlock password incorrectly for three consecutive times, the mobile phone will immediately send out a strong current to stun the thief and automatically dial 1 10 to report the exact location.