$\begin{array}{1 1}(A)\;\sqrt 1 : \sqrt 2 : \sqrt 3: \sqrt 4\\(B)\;1:1:1:1 \\(C)\;(\sqrt 1-0) :(\sqrt 2-\sqrt1) :(\sqrt 3 -\sqrt 3).... \\(D)\;\frac{1}{\sqrt 1}:\frac{1}{\sqrt 2} :\frac{1}{\sqrt 3} :\frac{1}{\sqrt 4}\end{array} $