A drop (0.05ml) of 12M HCl is spread over a thin sheet of aluminum foil (thickness 0.10mm and density of Al=2.70g/ml).Assuming whole of the HCl is used to dissolve Al,what will be the maximum area of hole produced in foil?

Question

$(a)\;0.1cm^2\qquad(b)\;0.2cm^2\qquad(c)\;0.3cm^2\qquad(d)\;0.4cm^2$