What is the number of water molecules present in a tiny drop of water (volume 0.0018 ml) at room temperature? [NDA]

• A. \[4.84\times {{10}^{17}}\]
• B.        \[4.184\times {{10}^{18}}\]
• C. \[6.023\times {{10}^{19}}\]
• D.        \[6.023\times {{10}^{23}}\]