Ricky went on a 3—day trip with his friends.They drove three hundred and twelve kilometers on the first day.On the second day they drove four hundred and sixty—five kilometers.On the third day they drove two hundred and seventy kilometers.How many kilometers did Ricky and his friends drive in the three days all together?
- A、Nine hundred and forty—seven
- B、Nine hundred and ninety—seven
- C、One thousand and forty—seven
- D、One thousand one hundred and seven