$$2\times2\times2=8$$ 
A conductor wanted to make a trio consisting of a violinist, a pianist, and a drummer. He had to choose one of two violinists, one of two pianists, and one of two drummers. How many possible combinations did he have? 
Options:
A: $$3$$ 
B: $$4$$ 
C: $$8$$ 
D: $$24$$ 
E: $$25$$ 