The specific heat at constant volume for the monatomic argon is 0.075 kcal/kg-K, whereas its gram molecular specific heat is\[{{C}_{v}}=2.98\,cal/mol/k\]. The mass of the argon atom is (Avogadro's number \[=6.02\times {{10}^{23}}\] molecules/mol)

• A. \[6.60\times {{10}^{-23}}g\]   
• B. \[3.30\times {{10}^{-23}}g\]
• C. \[2.20\times {{10}^{-23}}g\]
• D. \[13.20\times {{10}^{-23}}g\]