There are some ducks and sheep in a farm. The number of sheep is $10$ more than ducks. The number of ducks is half the number of sheep. In total, how many ducks and sheep are there in the farm?  ~ 
选项为:A:$26$  B:$$30$$  C:$$33$$  D:$$39$$  E:$$40$$  请回答其中一个选项.