Anna is lining up to get some ice-cream. Counting from the front, she is the $$4$$\textsuperscript{th}~in the line. Counting from the back, she is the $$7$$\textsuperscript{th}. How many people are there lining up?~\uline{~~~~~~~~~~}~ 
选项为:A:$$9$$  B:$$10$$  C:$$11$$  D:$$12$$  请回答其中一个选项.