The bob of a simple pendulum executes SHM in water with a period\[t\], while the period of oscillation of the bob is \[{{t}_{0}}\] in air. Neglecting the frictional force of water and given that the density of the bob is\[(4/3)\,\times 1000\,kg/{{m}^{3}}\]. What relationship between \[t\] and \[{{t}_{0}}\] is true?

• A. \[{{t}_{{}}}={{t}_{0}}\]        
• B. \[{{t}_{{}}}=4{{t}_{0}}\]
• C. \[{{t}_{{}}}=2{{t}_{0}}\]      
• D. \[{{t}_{{}}}={{t}_{0}}/2\]