The distance of neptune and saturn from sun are nearly \[{{10}^{13}}\] and \[{{10}^{12}}\] meters respectively. Assuming that they move in circular orbits, their periodic times will be in the ratio [NCERT 1975; CBSE PMT 1994; MP PET 2001]

• A.             \[\sqrt{10}\]    
• B.             100
• C.             \[10\sqrt{10}\]
• D.               \[1/\sqrt{10}\]