Dave bought $3$ packets of chips at $2.40$ dollars each and $3$ cans of soft drink at $70$ cents each. How much did he spend altogether? 
选项为:A:$3.10$ dollars  B:$10.70$ dollars  C:$9.30$ dollars  D:$8.70$ dollars  E:$10.50$ dollars  请回答其中一个选项.