Selenium ingestion of \[90\] micrograms per day causes loss of hair. How many selenium atoms are there in this sample? (Atomic weight of \[Se=78.96\])

• A.  \[6.8\times {{10}^{23}}\]atoms
• B.         \[8.8\times {{10}^{17}}\]atoms
• C.  \[8.8\times {{10}^{22}}\]atoms
• D.         \[6.9\times {{10}^{17}}\]atoms