Two planets at mean distance \[{{d}_{1}}\] and \[{{d}_{2}}\] from the sun and their frequencies are n1 and n2 respectively then [Kerala (Med.) 2002]

• A.             \[n_{1}^{2}d_{1}^{2}={{n}_{2}}d_{2}^{2}\]
• B.               \[n_{2}^{2}d_{2}^{3}=n_{1}^{2}d_{1}^{3}\]
• C.             \[{{n}_{1}}d_{1}^{2}={{n}_{2}}d_{2}^{2}\]
• D.               \[n_{1}^{2}{{d}_{1}}=n_{2}^{2}{{d}_{2}}\]