There are $$20$$ students in a class lining up for recess. Mike is the $$7$$\textsuperscript{th} counting from front to back. How many students are behind Mike? What is his position counting from back to front? 
选项为:A:$$12$$, $$13^{\rm th}$$  B:$$13$$, $$14^{\rm th}$$  C:$$13$$, $$12^{\rm th}$$  D:$$14$$, $$13^{\rm th}$$  请回答其中一个选项.