A $Pb 75\%, Sn 5\%, Sb 20\%$
B $Pb 80\%, Sn 5\%, Sb 15\%$
C $Pb 70\%, Sn 10\%, Sb 20\%$
D $Pb 75\%, Sn 10\%, Sb 15\%$
Correct Answer: Option A
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