$$4$\times$100-3=397$$. 
What is the 100\textsuperscript{th}~number in the arithmetic sequence $$1$$, $$5$$, $$9$$, $$13$$, $$17$$, $$21$$, $$25$$, $$\cdots$$． 

* $$397$$ 
* $$399$$ 
* $$401$$ 
* $$403$$ 
* $$405$$ 