S is a set containing n elements. If two subsets A and B of S picked at random from the set of all subset of S. Then the probability that A and B have no common element.

Options

A. `(1)/(2^(n))`
B. `(2//3)^(n)`
C. `(3//4)^(n)`
D. `(4//5)^(n)`

Answer

A