There are $$30$$ pupils in my class. $$20$$ pupils like Maths and $$18$$ pupils like English. Twice as many pupils like both subjects as like neither of them. How many pupils like only Maths? 
选项为:A:$$20$$  B:$$16$$  C:$$12$$  D:$$8$$  E:$$4$$  请回答其中一个选项.