Given the product, the smaller the difference, the smaller the sum.  $210=2\times3\times5\times7$, so the length, the width, and the height are $5,$ $6,$ and $7$. $(5+6+7)\times4=72.$ 
Bob constructs a rectangular building by many $1\times1\times1$ cubes. The volume of the rectangular building is $210$. What is the least sum of all edges of the rectangular building? 
Options:
(A) $$18$$ 
(B) $$80$$ 
(C) $$72$$ 
(D) $$210$$ 
(E) $$116$$ 