The first perfect square is $$1^{2}$$, the $$2$$nd is $$2^{2}$$, and the $$3$$rd is $$3^{2}$$.  With this pattern, the $$100$$th perfect square is $$100^{2} = 100\times100= 10000$$. 
A positive number is called a perfect square whenever it is the square of a whole number. The first three perfect squares are $$1$$, $$4$$, and $$9$$. The $$100$$th perfect square is． 
Options:
$$100$$ 
$$1000$$ 
$$10000$$ 
$$100000$$ 