Chlorophyll,a green coloring matter contains 2.68% mg.The number of atoms of mg present 1g chlorophyll are

Question

$\begin{array}{1 1}(a)\;6.72\times 10^{20}&(b)\;6.72\times 10^{21}\\(c)\;6.72\times 10^{22}&(d)\;6.72\times 10^{23}\end{array}$