Density of 5 liter of water having mass 5 kg is:

• A.  \[100\,\,kg\,\,{{m}^{-3}}\]                   
• B.  \[1000\,\,kg\,\,{{m}^{-3}}\]  
• C.  \[250\,\,kg\,\,{{m}^{-3}}\]                   
• D.  \[7500\,\,kg\,\,{{m}^{-3}}\]