A talk show has two $$30$$-minute parts and has few commercials between them. The TV show started at $$1:50$$ and ended at $$3:00$$. How many minutes long were the commercials in total? 
选项为:A:$$30$$ min  B:$$20$$ min  C:$$15$$ min  D:$$10$$ min  请回答其中一个选项.