If C is a circle |z| = 4 and $${\text{f}}\left( {\text{z}} \right) = \frac{{{{\text{z}}^2}}}{{{{\left( {{{\text{z}}^2} - 3{\text{z}} + 2} \right)}^2}}},$$     then $$\oint\limits_{\text{c}} {{\text{f}}\left( {\text{z}} \right){\text{dz}}} $$   is

A. -x² + y² + constant B. x² - y² + constant C. x² + y² + constant D. -(x² + y²) + constant

A. 1 + 6i B. 9 - 8i C. 9 + 8i D. 17 + 6i

A. $$2\sqrt 2 + 2{\text{i}}$$ B. $$\frac{{ - 1}}{2} + \frac{{{\text{i}}{{\sqrt 3 }^2}}}{2}$$ C. $$\frac{{\sqrt 3 }}{2} - {\text{i}}\frac{1}{2}$$ D. $$\frac{{\sqrt 3 }}{2} - {\text{i}}\frac{1}{8}$$

A. 2πnj B. 0 C. $$\frac{{\pi {\text{j}}}}{{2\pi }}$$ D. 2πn