Consider the following elements. Which of the following is/are true about $$\mathrm{A}^{\prime}, \mathrm{B}^{\prime}, \mathrm{C}^{\prime}$$ and $\mathrm{D}^{\prime}$ ? A. Order of atomic radii: $$\mathrm{B}^{\prime}\lt \mathrm{A}^{\prime}\lt \mathrm{D}^{\prime}\lt \mathrm{C}^{\prime}$$ B. Order of metallic character: $$\mathrm{B}^{\prime}\lt \mathrm{A}^{\prime}\lt \mathrm{D}^{\prime}\lt \mathrm{C}^{\prime}$$ C. Size of the element: $$\mathrm{D}^{\prime}\lt \mathrm{C}^{\prime}\lt \mathrm{B}^{\prime}\lt \mathrm{A}^{\prime}$$ D. Order of ionic radii: $$\mathrm{B}^{\prime+}\lt \mathrm{A}^{1^{+}}\lt \mathrm{D}^{\prime+}\lt \mathrm{C}^{+}$$ Choose the correct answer from the options given below :