$$3\times3\times3\times3=81$$ 
$$2^{5}$$ means $$2$$ multipled by itself $$5$$ times, i.e. $$2^{5}=2\times2\times2\times2\times2=32$$. What is $$3^{4}$$ equal to? 

A) $$7$$ 
B) $$12$$ 
C) $$27$$ 
D) $$81$$ 
E) None of the above 