What is the value of (k-1/k) (k^2+1/(k^2))(k^4+1/(k^4))(k^8+1/(k^8))…

$k^{64}+\frac{1}{k^{64}}$

$\frac{k^{32}-\frac{1}{k^{32}}}{k-\frac{1}{k}}$

$k^{32}+\frac{1}{k^{32}}$

$\frac{k^{32}-\frac{1}{k^{32}}}{k+\frac{1}{k}}$