If a variable x takes values 0, 1, 2, ..., n with frequencies proportional to the binomial coefficients `""^(n)C_(0),""^(n)C_(1), ""^(n)C_(2),...,""^(n)C_(n)` then var(X) is

Options

A. `(n^(2)-1)/(12)`
B. `(n)/(2)`
C. `(n)/(4)`
D. None of these

Answer

C