If $$x = {\left( {0.25} \right)^{\frac{1}{2}}},$$$$y = {\left( {0.4} \right)^2},$$$$z = {\left( {0.216} \right)^{\frac{1}{2}}}$$then-

• A. > x > z
• B. > y > z
• C. > x > y
• D. > z > y