The number of carbon atoms present in a signature , if a signature written by carbon pencil, weighing `1.2 xx 10^(-3)` g is:

The number of carbon atoms present in a signature , if a signature written by carbon pencil, weighing `1.2 xx 10^(-3)` g is:
A. `12.04xx10^(20)`
B. `6.02xx10^(19)`
C. `3.01xx 10^(19)`
D. `6.02xx 10^(20)`

The number of carbon atoms present in a signature , if a signature written by carbon pencil, weighing `1.2 xx 10^(-3)` g is:

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