If A and B are coefficients of x^{n} in the expansions of (1 + x)^{2n }and (1 + x)^{2n–1} respectively, then A/B equals to(a) 1(b) 2(c) 1/2(d) 1/n
If A and B are coefficients of x^{n} in the expansions of (1 + x)^{2n} and (1 + x)^{2n–1} respectively, then A/B equals to