There are $$300$$ students in Think Primary School. Three-tenths of the students are in year $$5$$ and three-fifths of the year $$5$$ students are girls. How many year $$5$$ girls are there in Think Primary School? 
选项为:A:$$36$$  B:$$48$$  C:$$54$$  D:$$60$$  E:$$90$$  请回答其中一个选项.