Water from the first faucet fills the swimming pool in $70$ minutes. Water from each of the two other faucets fills the same swimming pool $3$ times faster. In how many minutes will the swimming pool be filled if all three faucets are opened? 
选项为:A:$$210$$  B:$$40$$  C:$$30$$  D:$$20$$  E:$$10$$  请回答其中一个选项.